Albert Patrick Brennan, birth 31 Mar 1915, New Orleans, next of kin, wife. no name given, employer A N Goldberg, 601 Corondelet St.
Albert Peter Brennan, birth 19 Dec 1921, Metaire, Jefferson Parish, next of kin Harold George Brennan (father) 238 Papwoth Ave, Metaire, Jefferson Parish, unemployed
Alphonse Robert Brennan, birth 13 June 1911, New Orleans, next of kin Mrs Mary Brennan (mother) 1534 Tchoupitoulas St., employer Horace William
Bernard Alvin Brennan, birth 21 April 1922, New Orleans, next of kin James Brennan, 135 North Hennessy, employer Higgins Industries, New Orleans
Charles Rosenbauer Brennan, birth 15 June 1924, New Orleans, next of kin Mrs. M Brennan (mothe), 4621 Palmyra St., employer New Orleans States, La Fayette Square
Daniel Edward Brennan, birth 9 June 1904, New Orleans, next of kin Mrs. K C Trauth, 134 So Gayoso St., employer Daniel E Brennan, 108 University Place
David Crafton Brennan, birth 18 Aug 1921, New Orleans, next of kin Mrs. J R Brennan (mother) 4439 South Carrollton, employer William B Reilly Co., 640 Magazine St.
Denis Brennan, birth 14 May 1913, Baton Rouge, next of kin Mrs Albertine B Brennan (mother) 339 South Hypolit, Baton Rouge, employer Mr M Guynes, McCarmick Deering Store, Baton Rouge
Donald Anthony Brennan, birth 9 Nov 1926, New Orleans, next of kin Mrs. James Brennan, 135 North Hennessy St., student
Edward George Brennan, birth 7 Oct 1924, New Orleans, next of kin Mrs James Brennan (mother), 135 North Hennessy St., employer Bakers Shoe Store, 1041 Canal St.

Incomplete as of 5/4/2018
Sources
www.familysearch.org/search/record/results?count=75&query=%2Bsurname%3ABrennan~&collection_id=1916286​

 
John Brennan's life came to abrupt end Nov. 11th 1916 when he died in France in service in the Leinster Regiment in the British Army. He was survived by his wife Mary Anne Duncan Brennan. John Brennan married Mary Anne Duncan in St Catherine's RC Church in South Dublin in 1894. John's father was Patrick Brennan, a carpet layer and Mary's father was Edward Duncan, a stoker. Mary Anne Duncan was born in 1872 at Marrowbone Lane, Dublin, daughter of Edward Duncan & Ellen Merry.
John and Mary Anne's children were;

Mary born 1896, family resident at 7 Brown St.
Margaret born 1898, family resident in Brab? St.
Patrick born 1899, address illegible
Ellen born 1901, family resident 138 Francis St.
John Leo born 1903, family resident in Brewery lane
Kathleen born 1907, family resident 30 Chamber Street
Anne Harriet born 1910,

By 1911, the family had moved yet again to Cork St., off Merchant's Quay where all 8 of them were living in one room. Clearly they were one of the many Dublin families of the time who had no security of tenure in their rented rooms. Mary Anne had given birth to 8 children by then of whom 6 were still living. Mary the eldest of their 6 surviving children was aged 15 and working as a factory girl. John Brennan, her father was a general labourer.

Mary Ellen Brennan married Peter McDonnell, a van driver, at St. Andrew's RC Church in 1917 just 10 short months before her father's death.
Mary Anne's widow's pension was awarded in May 1917. She applied for an allowance for her children Ellen, John Leo, Kathleen & Ann Harriet which implies that they were still unmarried at the time. She was refused an allowance for Ellen because Ellen was over the age of 16.
​All the above information was gleaned from Mary Anne Brennan's Widow's pension Form.

Sources
Birth of Mary Anne Duncan 1872
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1872/03262/2195803.pdf
Marriage 1894
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1894/10580/5854414.pdf
Birth of Mary 1896
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1896/02184/1826734.pdf
​Birth of Margaret 1898
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1898/02085/1795463.pdf
Birth of Patrick 1899
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1900/02008/1771819.pdf
​Birth of Ellen 1901
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1901/01955/1754853.pdf
​Birth of John Leo 1903
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1903/01851/1721505.pdf
Birth of Kathleen 1907
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1907/01688/1670712.pdf
Birth of Anne Harriet 1910
​civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1910/01583/1637371.pdf
1911 Census
www.census.nationalarchives.ie/pages/1911/Dublin/Merchant_s_Quay/Cork_St_/57857/
Marriage of Mary Ellen Brennan 1917
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1917/09737/5533162.pdf
​British Armed Forces, First World War, Widow's Pension Form 1917

We honour your service.
 
with thanks to Fold3 
​(Those with more experience with Military Records may be able to glean more from these records.  10/2/2018)

Brannan, Joseph 5th US Colored Infantry, Bla-Bro
Brannan, Isaac 49th US Colored Infantry, Misc Cards,Company A, died of fever 1863 RIP

Brannan Benjamin 116th US Colored Infantry,Company D, birth 1842/3
5ft 8in tall, Farmer, born Scott Co. Kentucky, enlisted June 1864 Lexington, Kentucky, discharged 1867 New Orleans, remarks Henry Harrington #supposed to be owner (as written in document) 

Brannan Thomas 22nd US Colored Infantry, birth 1845/6
5ft 7.5in, Farmer, born  Shenandoah County, Virginia, enlisted Chambersburg  PA Dec. 1863,
Free April 19 1861
 
Brannan Allen 13th US Colored Infantry, Misc Service Cards
Present in Cumberland Hospital, Nashville, Tennessee Sept-Oct 1865
​
Brannan Major 103rd US Colored Infantry birth 1834/5
born Screven County, Georgia, occ. farmer, never paid, deserted in same year as enlistment 1865
Brannan Solomon 11th US Colored Infantry (New), Bel-Buc
​
Brannan Joseph 32nd US Colored Infantry birth 1844/5
5ft 4in, born Shenandoah County, Virginia, enlisted Chambersburg PA Feb 1864, Muster out Roll Aug 22 1865 Hilton Head, South Carolina

Brannan Sanford 48th US Colored Infantry, birth 1831/32
born Anderson County, Kentucky, occ. waiter, discharged 1866 Baton Rouge, Louisiana

Brannan Charles 101st US Colored Infantry, birth 1844/5
born Trigg County, Kentucky, occ. farmer, died Wilson Hospital, Nashville, Tennessee Feb 5 1865 RIP
cause of death pneumonia

Brannan Solomon 11th US Colored Infantry (New), Misc Service Cards, Ab-Yo
discharged May 1865 for disability

Brannan Powell 34th US Colored Infantry, Misc Cards
Brannan Sauford 48th US Colored Infantry, birth 1831/2, joined at lake Providence 1863

Brannan Benjamin 34th US Colored Infantry, birth 1843/4
born St. John's County Georgia, occ. waiter, drowned at the Ashepoo River, South Carolina at the loss of the Boston May 26 1864 RIP

Brannan George 101st US Colored Infantry, birth 1843/4
born Trigg County, Kentucky, occ. farmer, 

Brannan Jacob 4th US Colored Heavy Artillery, birth 1840/1
born New Madrid, MO, occ. Blacksmith, killed in action near Fort Donaldson, Tenn. Oct 15 1864 RIP
in remarks 'Slave? April 17 1861'

Brannan Charles 137th US Colored Infantry, birth 1845/6
born Harris County, Georgia, occ. farmer
 
Brennan Benjamin 34th US Colored Infantry, Misc Cards.  
Brannan James W 5th US Colored Infantry, Bla-Bro, birth 1842/3

Picture Credit

• Title: [District of Columbia. Company E, 4th U.S. Colored Infantry, at Fort Lincoln]
• Creator(s): Smith, William Morris, photographer
• Date Created/Published: [Between 1863 and 1866]
• Medium: 1 negative : glass, wet collodion.
• Summary: Photograph of Washington, 1862-1865, view of the defenses of Washington. Shows 27 African Americans in two lines with rifles resting on the ground.
• Reproduction Number: LC-DIG-cwpb-04294 (digital file from original neg.) LC-B8171-7890 (b&w film neg.)
• Rights Advisory: No known restrictions on publication.
• Call Number: LC-B817- 7890 [P&P] LOT 4190-F (corresponding print)
• Repository: Library of Congress Prints and Photographs Division Washington, D.C. 20540 USA http://hdl.loc.gov/loc.pnp/pp.print
• www.loc.gov/pictures/item/cwp2003000946/PP/

 
In the US Federal Census 1870, place of birth was recorded for the first time. I decided to search on ancestry today for all people recorded as having been born in Ireland (exact) and resident in a named State (exact). A word of caution here, the numbers are not always entirely accurate depending on search engine capability, the literacy of the enumerator, the accuracy of the transcription or indeed the report given by our ancestors to the enumerator. However, this list does give us some idea of the scale of the research necessary if we have been told that our ancestor settled in such and such a State. 
A further word of caution for those researching the Brennan name, many Irish people were not literate in the English language and I have found many phonetic spellings for the name Brennan, some of them very amusing. The highest concentration of the Brennan family name in 1870, (According to ancestry) was in New York with 1,319 followed by Pennsylvania with 377.

Alabama 3,904 Irish born
Brennan (Exact) 1

Arizona 496 Irish born
Brennan (exact) 0

Arkansas 1,485 Irish born
Brennan (exact) 3

California 54,454 Irish born
Brennan (exact) 52

Colorado 1,685 Irish born
Brennan (exact) 1

Connecticut 70,473 Irish born
Brennan (exact) 215

Delaware 5.907 Irish born
Brennan (exact) 0

Florida 732
Brennan (exact) 1

Georgia 5,114
Brennan (exact) 5

Idaho 989
Brennan (exact) 0

Illinois 120,308
Brennan (exact) 203

Indiana 32,070
Brennan (exact) 30

Iowa 40,359
Brennan (exact) 38

Kansas 10,963
Brennan (exact) 6

Kentucky 21,703
Brennan (exact) 14

Louisiana 17,143
Brennan (exact) 19

Maine 15,680
Brennan (exact) 6

Maryland 23,578
Brennan (exact) 10

Massachusetts 214,869
Brennan (exact) 250

Michigan 41,892
Brennan (exact) 52

Minnesota 26,390
Brennan (exact) 30

Missouri 54,988
Brennan (exact) 81

Mississippi 3,372
Brennan (exact) 0

Montana 1,645
Brennan (exact) 0

Nebraska 4,970
Brennan (exact) 2

Nevada 5,042
Brennan (exact) 2

New Hampshire 12,157
Brennan (exact) 11

New Jersey 86,792
Brennan (exact) 123

New Mexico 550
Brennan (exact) 1

New York 729,121
Brennan (exact) 1,319

North Carolina 693
Brennan (exact) 0

North Dakota 303
Brennan (exact) 0

Ohio 83,215
​Brennan (exact) 85

Oregon 1,985
Brennan (exact) 2

Pennsylvania 238,466
Brennan (exact) 377

Rhode Island 25,387
Brennan (exact) 61

South Carolina 3,317
Brennan (exact) 4

South Dakota 743
Brennan (exact) 0

Tennessee 7,179
Brennan (exact) 5

Texas 4,041
Brennan (exact) 2

Utah 523
Brennan (exact) 0

Vermont 14,087
Brennan (exact) 12

Virginia 5,252
Brennan (exact) 0

Washington 1,057
Brennan (exact) 1

West Virginia 6,891
Brennan (exact) 1

Wisconsin 48,592
Brennan (exact) 68

Wyoming 1,109
Brennan (exact) 2

By name & townland 1901
Andrew Brennan ~Behaghane
Belinda Brennan ~Capparoe
Bridget Brennan ~Lacka East
Catherine Brennan ~Dromin East, Moybella North
Charles Brennan ~Main St (Caher), Newmarket St (Caher), Top St (Caher)
Cornelius Brennan ~Ballymalis
Daniel Brennan ~Ballydarrig, Chapel St (Cahir), Cromane Upper, Kilfenora, Rosacoosane
Denis Brennan ~Clashatlea, Glanlough Lower, Kilgortaree
Ellen Brennan ~Gleesk
Eugene Brennan ~Lacka East, Laherdane
George Brennan ~Derreen
Hannah Brennan ~Pound Lane (Kenmare)
Hanoria Brennan ~Knockroe, Tullig
Honoria Brennan ~Cloonafineela

James Brennan ~Ballymacandrew, Beenbane, Behaghane, Canuig, Coomnakilla North, Derreen, Derreenavurrig, Gurrane East, Maulagallane, Strand St (Tralee)

Jane Brennan ~Killaha East
Johannah Brennan ~Gurrane East

John Brennan ~Ardmore, Baltovin, Ballydarrig, Behaghane, Brackaharagh, Derra West, Garrahadoo, Graigues, Guhard North, Gurrane East, Kenmare, Killaha West, Laharan (Valentia), Mastergeehy, Rathkieran, Rock St (Tralee)
 
Julia Brennan ~Abbeydorney, Pound Lane (Kenmare), Rea (Abbeydorney)
Margaret Brennan ~Ballindooganig
Mary Brennan ~Behaghane, Brackaharagh, Dungeagan, Fairfield, Guhard North, Gurane East, Roe St (Tralee)
​
Michael Brennan ~Aghort, Charles St (Listowel Urban), Dromkeare, Farranreagh (Valentia), Glanlough Lower, Gurrane West, High St (Caher), Killabuonia, Lacka East, Sneem Upper, Toohana, Toorrreennasliggaun

Patrick Brennan ~Aghort, Ahabeg, Bridewell St (Tarbert), Coomnahorna West, Derreenauliff, Doory, Glanlough Lower, Gleesk, Gortacrossane, Kinard East, Tahilla

Paul Brennan ~Rusheen
Peter Brennan ~Knockeenawaddra, Owenagarry
Philip Brennan ~Gortagurrane, Rossdohan, Sneem Upper
Thomas Brennan ~Knockreagh

Full Paper Brennan, Kerry, Ireland ~Heads of Households 1901

The Guild of One Name Studies sent me an email lately which told me of a website that I did not know about before. The website is for the Commonwealth War Graves Commission.
A search for the Brennan family name gave me 462 results.
343 who served with the United Kingdom Forces
64 with the Australian Forces
12 with the New Zealand Forces
40 with the Canadian Forces
3 with the South African Forces

6 of the records are for soldiers commemorated in Ireland
Francis A Brennan Service Number 25244 of the Royal Dublin Fusiliers died 1916
John Brennan Service Number 9952 of the Royal Irish Regiment died 1916
John Brennan Service Number 27864 of the Royal Welsh Fusiliers died 1918
John Brennan Service Number 24999 of the Royal Dublin Fusiliers died 1918
Moses Brennan Seaman of the Merchant Navy died 1940
Thomas Joseph Brennan Service Number 1835395 of the Royal Artillery died 1941

Moses Brennan is such an unusual name that I couldn't help but do a quick search to see if I could find him.
I found a Moses Brennan, son of Edward Brennan and Kate Roche born on March 7th, 1898 at Trimmer's Lane, Wexford. In the 1901 Census Moses aged 3 was living with his parents Edward & Catherine and siblings, Patrick, Edward (Moses twin), and Katie. Moses uncle John is recorded as a sailor. By 1911, Moss mother is recorded as having birthed 10 children of whom only 5 are living.
In 1922, Moses, occupation Sailor, married Alice Doran of Scholar Street., Wexford.

Sources
Commonwealth War Graves Commisssion
www.cwgc.org/find-war-dead.aspx?cpage=1
Birth Cert 1898
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1898/02092/1797786.pdf
​1901 Census Wexford
​www.census.nationalarchives.ie/pages/1901/Wexford/Wexford_Urban/Trimmer_s_Lane_West/1806473/
​1911 Census Wexford
​www.census.nationalarchives.ie/pages/1911/Wexford/Wexford_No__3_Urban/Trimmers_Lane_West/698213/
1922 Marriage
 civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1922/09212/5332567.pdf 

UPDATED 7/1/2018
If you or one of your Kerry parents has the surname Brennan, an autosomal DNA test kit has been donated to assist those researching their Kerry Brennan ancestry. Please leave a comment below and I will get back to you.

In 1901, 563 Kerry people bore the Brennan family name.
97 households had a Brennan listed as the Head of Household.
​Brennan households are listed by townland & DED as spelled in the 1901 Census in alphabetical order. In some cases I have added information in the index below which may help you to more easily identify your ancestor, for example if they were not born in Kerry, had an unusual occupation or religion.
Whilst every effort has been made to ensure the accuracy of this piece of research mistakes may have occurred. If you are aware of any or have more information to add please let me know in the comments box below. Please include online links. This is a work in progress and will be updated as I have further information! Index Brennan Kerry 1901
Martine

Abbeydorney, Abbeydorney
Julia Brennan, married, Seamstress, Mahony marriage to Patrick Brennan Feb 17 1874 Abbeydorney
PATRICK BRENNAN JULIA MAHONY
Address GLENCAGH GLANCAGH
Father EDMUND BRENNAN PATRICK MAHONY
Mother MARY CONNOR JULIA SAVAGE
www.census.nationalarchives.ie/pages/1901/Kerry/Abbeydorney/Abbeydorney/1425203/
​Died July 6 1907 Brother Patrick Mahony present at death
​civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1907/05518/4546721.pdf
​
​Marriage of EUGENE BRENAN of NR and MARY CONNOR of NR on 8 February 1842 Abbeydorney
Marriage of Eugene Heffernan of Ballymcelligot & MARY BRENNAN of Glounagh on 24 February 1881 Abbeydorney
Marriage of Thomas BRENNAN of GLOUNCAGH & Margaret Hayes of Droumcunnig on 26 February 1884 Abbeydorney

Aghort, St. Finans
Michael Brennan & his wife Mary Reardon as recorded in baptism record of son Patrick March 14 1870
www.census.nationalarchives.ie/pages/1901/Kerry/St__Finans/Aghort/1405770/ 

Patrick Brennan & his wife Mary Moriarty as recorded in baptism of son Michael baptism Sept 9 1872
www.census.nationalarchives.ie/pages/1901/Kerry/St__Finans/Aghort/1405769/

Ahabeg, Kiltomy
​Patrick Brennan & wife Mary Browne m 1894 Listowel
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1894/10557/5845850.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Kiltomy/Ahabeg_East/1420867/

Ardmore, Castlecove
John Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Ardmore/1411342/
​In 1852, there is a Mary Brennan renting land at Ardmore, Kilcrohane Civil Parish from Michael Burns.

Ballindooganig, Ballyseeedy
Margaret Brennan, married~husband Daniel wife Margaret Marshall as per bapt of son John April 5th 1891 
www.census.nationalarchives.ie/pages/1901/Kerry/Ballyseedy/Ballindooganig/1429331/

Baltovin, Killahin
John Brennan & his wife Mary Egan m Feb 14 1885 Ardfert
Name JOHN BRENNAN MARY EGAN
Address BALTOVIN LERRIG
Occupation NRNR
Father MAURICE BRENNAN MAURICE EGAN
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1885/10864/5967113.pdf 
www.census.nationalarchives.ie/pages/1901/Kerry/Killahan/Baltovin/1426035/
​If you are researching this family do make use of the fact that they had a son called Solomon born c.1893

Ballydarrig, Castlequin
Daniel & his wife Katherine Keating m Feb 9 1875 Caherciveen
Name DANIEL BRENAN KATE KEATING
Address BALLYDARRIG CORIGROUR
Father MICHAEL BRENAN JOHN KEATING
www.census.nationalarchives.ie/pages/1901/Kerry/Castlequin/Ballydarrig/1404053/

John Brennan & wife Mary Griffin as per birth of son Michael Dec 25th 1899
www.census.nationalarchives.ie/pages/1901/Kerry/Castlequin/Ballydarrig/1404055/
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1900/02001/1769475.pdf

Ballymacandrew North, Ballynorig
James Brennan & wife Hanoria Slattery m Jan. 27 1885 in Ardfert
Name JAMES BRENNAN HONORA SLATTERY
Address BALLYMACANDREW BALLYIMKIN
Occupation NRNR
Father DENIS BRENNAN CHARLES SLATTERY
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1885/10864/5967111.pdf
​
www.census.nationalarchives.ie/pages/1901/Kerry/Ballynorig/Ballymacandrew_North/1425575/ 

Ballymalis, Kilbonane
Cornelius Brennan & wife Mary poss mar Fermoy 1873
www.census.nationalarchives.ie/pages/1901/Kerry/Kilbonane/Ballymalis/1417558/
Daughter Catherine m Michael Doody Oct 26 1893 Miltown
Name DENIS DOODY CATHERINE BRENNAN
Address KILLARNY BALLYMALIS
Father MICHAEL DOODYCORNELIUS BRENNAN
​
Beenbane, Loughcurrane
James Brennan & his wife Norah Sullivan as per bapt cert of son Martin Sept. 11 1879
www.census.nationalarchives.ie/pages/1901/Kerry/Loughcurrane/Beenbane/1404726/

Behaghane, Caherdaniel
Andrew Brennan  & his wife Ellen Fitzgerald m 1883 Cahirciveen
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1883/10930/5993329.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Behaghane/1404435/
​
Mary Brennan, of Behaghane, Caherdaniel, a widow.
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Behaghane/1404422/

James J Brennan, a widower
son John & wife Mary Leary m 1895 Cahirciveen
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1895/10521/5832080.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Behaghane/1404423/

​John J Brennan & wife Matilda Sullivan as per dau Honora marriage to Cornelius Mack Feb 12 1901 Caherdaniel
m Feb 7 1864 ? wife's name listed as Margaret? Sullivan
Index for Civil Marriage for Matilda Sullivan 1866 Q1, Vol 20, p181
​www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Behaghane/1404424/
​
Brackaharagh, Caherdaniel
John P Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Brackaharagh/1404467/

Mary Brennan, widow
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Brackaharagh/1404468/

Bridewell St., Tarbert
Patrick Brennan birthplace Fermanagh & wife Margret McEvoy m Nov. 13 1873 Tarbert
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Brackaharagh/1404468/
​PATRICK BRENNAN MARGARET MCEVOY
Address TARBERT ISLAND DOONARD
Occupation NRNR
Father PATRICK BRENNAN JAMES MCEVOY

Patrick Brennan RIC & wife Nora birthplace Co. Clare~ Neylan m Kildysart Jul 31st 1897
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1897/10465/5811062.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Tarbert/Bridewell_Street/1424793/
​Birth of dau Mary A JUl 12th 1898
​civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1898/02067/1789992.pdf
​
Canuig, Ballinskelligs
James Brennan & his wife Nora poss Sugrue as per bapt of dau Catherine June 18th 1871 
www.census.nationalarchives.ie/pages/1901/Kerry/Ballinskelligs/Canuig/1405003/
​

Capparoe, Dromore
Belinda Brennan, a widow, COI
www.census.nationalarchives.ie/pages/1901/Kerry/Dromore/Capparoe/1410147/

Charles St., Listowel Urban
Michael Brennan age 25? & wife Mary age 60? need to check this
www.census.nationalarchives.ie/pages/1901/Kerry/Listowel_Urban/Charles_Street/1423392/

Chapel St., Caher
Daniel Brennan & wife M
www.census.nationalarchives.ie/pages/1901/Kerry/Caher/Chapel_Street/1403560/

Clashatlea, Arabella
Denis Brennan & wife Johanna Collins m 1889
www.census.nationalarchives.ie/pages/1901/Kerry/Arabela/Clashatlea/1429193/
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1889/10730/5912165.pdf
​

Cloonafineela, Kilflynn
Hanoria Brennan, widow, Hanoria Stack & Thomas Brennan as per bapt of son Robert Nov 17th 1878 Abbeydorney ??
www.census.nationalarchives.ie/pages/1901/Kerry/Kilflyn/Cloonnafinneela/1429602/
​Death of Thomas Brennan, Kilflynn 1900 but wife's name does not match
​civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1900/05757/4626403.pdf

Coomnahorna West, Caherdaniel
Patrick & his wife Bridget Mack 
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1884/10896/5979906.pdf
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1887/02543/1941242.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Caherdaniel/Coomnahorna_West/1404518/

Coomnakilla North, Dromore
James & his wife Mary Connor as per bapt cert of son Timothy Dec 31st 1887
www.census.nationalarchives.ie/pages/1901/Kerry/Dromore/Coomnakilla_North/1410163/

Cromane Upper, Killorglin
Daniel & his wife Hannah Connor m Mar 7th 1886
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Cromane_Upper/1416754/
​DANIEL BRENNAN JOHANNA CONNOR
Address CROMANE LOUGHEEGANAVANE
Father MICHAEL NR TIMOTHY NR
Mother ELLEN MORIARTY MARY MANGAN

Derra west, Gunsborough
Johanna (John) Brennan & wife Johanna 
www.census.nationalarchives.ie/pages/1901/Kerry/Gunsborough/Derra_West/1422178/

Derreen, Ardea
George Roland Brennan & wife Annie Mansfield m 1891
www.census.nationalarchives.ie/pages/1901/Kerry/Ardea/Derreen/1412157/
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1891/10671/5888946.pdf
​
Derreen, Derriana
James Brennan & his wife Bridget Courtney m Feb 27th 1892
JAMES BRENNAN BRIDGET COURTNEY
Address DOORA DIRREEN
FatherJEREMIAH BRENNAN HUMPHREY COURTNEY
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1892/10629/5872299.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Derriana/Derreen/1405345/

Derreenauliff, Castlecove
Patrick & his wife Ellen Fitzgerald as per bapt of son Bartholemew Mar 31st 1889
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Derreenauliff/1411378/

Derreenavurrig, Castlecove
James Brennan & his wife Johanna
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Derreenavurrig/1411403/

Dungeagan, Ballinskelligs
Mary Brennan, widow, son Denis Curran
www.census.nationalarchives.ie/pages/1901/Kerry/Ballinskelligs/Dungeagan/1405080/

Doory, Cloon
Patrick Brennan & his wife Mary Murphy as per bapt of dau Helen Feb 11th 1895
www.census.nationalarchives.ie/pages/1901/Kerry/Cloon/Doory/1405730/

Dromin East, Dromin
Catherine Brennan, widow, maiden name Sullivan
​www.census.nationalarchives.ie/pages/1901/Kerry/Dromin/Dromin_East/1417511/

Dromkeare, Loughcurrane
Michael Brennan, widower
www.census.nationalarchives.ie/pages/1901/Kerry/Loughcurrane/Dromkeare/1404802/

Fairfield, Caher
Mary Brennan, widow, sons Patrick Hoare & John Lynch & dau Johanna McCarthy all single
www.census.nationalarchives.ie/pages/1901/Kerry/Caher/Fairfield/1403627/

Farranreagh, Knightstown, Valentia
Michael & his wife Nora
www.census.nationalarchives.ie/pages/1901/Kerry/Valentia/Farranreagh___Knightstown/1407226/

Garrahadoo, Killorglin
John Brennan & his wife Anne Collins m Feb 18th 1890 
JOHN BRENNAN ANN COLLINS
Address KILLORGLIN CLASHATLEA
Father DENIS BRENNAN JOHN COLLINS
​Mother JOHANNA SULLIVAN JOHANNA BROSNAN
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Garrahadoo/1416886/

Glanlough Lower, Castlecove
Michael Brennan & his wife Mary Sullivan as per bapt of son James Mar 29th 1891 Sneem 
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Glanlough_Lower/1411453/
Patrick Brennan & his wife Abbie/Abigail McCarthy as per bapt of son Patrick Jan 11th 1888 Sneem
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Glanlough_Lower/1411457/
Denis Brennan & wife Mary Leary as per bapt of dau Julia Mar 1st 1890 
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Glanlough_Lower/1411451/


Gleesk, Castlecove
Patrick & his wife Hanora
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Gleesk/1411476/
​
Ellen Brennan, widow maiden name McCarthy, as per birth of son Stephen Dec 10 1885 Kenmare, husband John
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1886/02608/1963232.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Castlecove/Gleesk/1411477/

Gortacrossane, Ennismore
Patrick Brennan & his wife Johanna
www.census.nationalarchives.ie/pages/1901/Kerry/Ennismore/Gortacrossane/1421255/

Graigues, Ballybrack
John Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Ballybrack/Graigues/1404360/
​
Guhard North, Lisselton
John Brennan & his wife Margaret Sheehy as per birth cert of son Martin 1889
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1889/02468/1916902.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Lisselton/Guhard_North/1422499/
Mary Brennan, widow

Gurrane East, Killorglin
James Brennan, single, Patrick Brosnan, brother in law
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Gurrane_East/1416898/
Mary Brennan, a widow, grandaughter Ellie Lyons
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Gurrane_East/1416899/
John Brennan & his wife Hannah
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Gurrane_East/1416897/
Johannah Brennan, widow, niece Ellen Riordan
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Gurrane_East/1416896/

Gurrane West, Killorglin
Michael & his wife Bridget Sheehan
www.census.nationalarchives.ie/pages/1901/Kerry/Killorglin/Gurrane_West/1416948/

Gortagurrane West, Ballyconry
Phillip Brennan, widower, son in law John Lanlee
www.census.nationalarchives.ie/pages/1901/Kerry/Ballyconry/Gortagurrane_West/1419362/

High St., Caher
Michael Brennan & wife Bridget
www.census.nationalarchives.ie/pages/1901/Kerry/Caher/High_Street/1403639/

Kenmare, Kenmare
John Brennan, land surveyor, born at sea, Christian known as Brethern & wife Maria Elizabeth
www.census.nationalarchives.ie/pages/1901/Kerry/Kenmare/Kenmare/1410444/


Killabuonia, St. Finans
Michael Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/St__Finans/Killabuonia/1405796/

Killaha East, Dawros
Jane Brennan, single
​www.census.nationalarchives.ie/pages/1901/Kerry/Dawros/Killaha_East/1412474/

Killaha West, Dawros
John Brennan & his wife Bridget
www.census.nationalarchives.ie/pages/1901/Kerry/Dawros/Killaha_West/1412487/

Kilfenora, Ballynahaglish
Daniel Brennan born Tipperary & his wife Mary Lawlor
www.martinebrennan.com/the-brennan-blog/daniel-brennan-tipperary-born-c-1840
​Marriage 1885 Tralee
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1885/10871/5970362.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Ballynahaglish/Kilfenora/1430742/
​Death of Mary Lawlor Brennan
civilrecords.irishgenealogy.ie/churchrecords/images/deaths_returns/deaths_1905/05590/4571023.pdf
​
Kilgortaree, Cappagh
Denis Brennan & his wife Margaret
www.census.nationalarchives.ie/pages/1901/Kerry/Cappagh/Kilgortaree/1410911/

Kinard East, Ballinskelligs
Patrick Brennan, single
www.census.nationalarchives.ie/pages/1901/Kerry/Ballinskelligs/Kinard_East/1405126/

Knockeenawaddra, Portmagee
Peter Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Portmagee/Knockeenawaddra/1406802/

Knockreagh, Tubrid
Thomas & his wife Maggie Hayes m Feb 26 1884 Abbeydorney
Name THOMAS BRENNAN MARGARET HAYES
Address GLOUNCAGH DROUMCUNNIG
Father EUGENE BRENNAN MAURICE HAYES
Mother MARY OCONNOR BRIDGET WALSH
www.census.nationalarchives.ie/pages/1901/Kerry/Tubrid/Knockreagh/1426278/

Knockroe, Bahaghs
Hanoria, widow
www.census.nationalarchives.ie/pages/1901/Kerry/Bahaghs/Knockroe/1403189/

Lacka East, Urlee
Michael Brennan & wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Urlee/Lacka__East/1419988/
​Dau Catherine m John Lucid 1892 Listowel
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1892/10646/5878975.pdf

Bridget Brennan, widow
www.census.nationalarchives.ie/pages/1901/Kerry/Urlee/Lacka__East/1419985/
​
Eugene Brennan & wife Mary Horgan m Feb 4 1894 Listowel
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1894/10557/5845846.pdf
​www.census.nationalarchives.ie/pages/1901/Kerry/Urlee/Lacka__East/1419984/

Laharan, Valentia
John Brennan & his wife Kate O'Connor as per bapt of son John Dec 22nd 1876 Valentia
www.census.nationalarchives.ie/pages/1901/Kerry/Valentia/Laharan/1407136/

Laherdane, Kilehenny
​Eugene & wife Catherine Connor, as per Birth Cert of son Edmond 28 July 1886
www.census.nationalarchives.ie/pages/1901/Kerry/Killehenny/Lahardane/1419849/
 civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1886/02586/1955998.pdf


Main St., Caher
Charles Brennan & wife Bridget Clifford as per Birth Cert of dau Agnes 1881
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1881/02834/2038983.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Caher/Main_Street/1403674/

Mastergeehy, Cloon
John Brennan & wife Ellia (Ellen) Garvey m Jul 25th 1896
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1896/10503/5825208.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Cloon/Mastergeehy/1405752/

Maulagallane, Sneem
James Brennan, widower
​www.census.nationalarchives.ie/pages/1901/Kerry/Sneem/Maulagallane/1411853/
Daniel Brennan son of James m Bridget Hussey 1896
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1896/10484/5818415.pdf

Moybella North, Ballyconry
Catherine Brennan, single
www.census.nationalarchives.ie/pages/1901/Kerry/Ballyconry/Moybella_North/1419436/

Newmarket St., Caher
Charles Brennan & wife Ellin Golden m Feb. 15 1896
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1896/10484/5818206.pdf 
​www.census.nationalarchives.ie/pages/1901/Kerry/Caher/Newmarket_Street/1403711/

Ownagarry, Kilgobnet
Peter Brennan & his wife Mary
www.census.nationalarchives.ie/pages/1901/Kerry/Kilgobnet/Ownagarry/1416519/
​Marriage of son Peter to Bridget Tuohy Feb 9 1929 Killorglin
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1929/09058/5277125.pdf

Pound Lane, Kenmare
Hannah Brennan, widow and son Daniel
www.census.nationalarchives.ie/pages/1901/Kerry/Kenmare/Pound_Lane/1410618/
​Daniel Brennan m Hannah Cody of Waterford c1905, as per birth cert of son Patrick Mar 25 1910 Kenmare
​civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1910/01565/1631737.pdf

Julia Brennan, widow
www.census.nationalarchives.ie/pages/1901/Kerry/Kenmare/Pound_Lane/1410615/ 

Rathkieran, St. Finans
John Brennan & his wife Mary Sullivan, mother in law Nora Sullivan resident with couple
www.census.nationalarchives.ie/pages/1901/Kerry/St__Finans/Rathkieran/1405824/
​
Rea, Abbeydorney
John Brennan & wife Ellen Buckley m Feb 10th 1891Abbeydorney
www.census.nationalarchives.ie/pages/1901/Kerry/Abbeydorney/Rea/1425068/
churchrecords.irishgenealogy.ie/churchrecords/details/cd87940507351

Rossdohan, Tahilla
Phillip Brennan Retired Army Pensioner & wife Annie (poss Mountain as per bapt of dau Ellen Aug 21st 1892 Sneem)
www.census.nationalarchives.ie/pages/1901/Kerry/Tahilla/Rossdohan/1412053/ 

Rusheen, Carrig
Paul & his wife Anne Lynch as per bapt of son Thomas  April19 1896
Marriage 1891 Listowel
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1891/10679/5892200.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Carrig/Rusheen/1422096/

Roe St., (Rae St.) Tralee Urban
www.census.nationalarchives.ie/pages/1901/Kerry/Tralee_Urban/Roe_Street/1432060/
Mary Brennan, widow

Rock St., Tralee Urban
John Brennan & wife Margaret O'Connor m Nov 20th 1894 Tralee
www.census.nationalarchives.ie/pages/1901/Kerry/Tralee_Urban/Rock_Street/1432203/
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1894/10583/5855825.pdf
​son John P L Brennan m Sadie Milne New York Oct 18 1924
​www.familysearch.org/ark:/61903/1:1:2463-2TR

Rosacoosane, Greenane
Daniel Brennan, widower
son Michael Brennan, wife Margaret Healy as per birth cert of dau Bridget Aug  1st 1897
​civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1897/02100/1800267.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Greenane/Rossacoosane/1410267/

Sneem Upper, Sneem
Michael Brennan, widower
www.census.nationalarchives.ie/pages/1901/Kerry/Sneem/Sneem_Upper/1411940/
Phillip Brennan & wife Mary Teahan as per bapt cert of son Daniel April 26th 1887
Marriage 1871 Kenmare
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1871/11339/8162150.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Sneem/Sneem_Upper/1411931/

Strand Street, Tralee Urban
James Brennan (Constable RIC) born Carlow, & his wife Kate Donovan as per birth of Mary Elizabeth Dec 13th 1897 Tralee
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1898/02090/1797083.pdf
​Marriage 1895 Clonakilty
​civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1895/10529/5835376.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Tralee_Urban/Strand_Street/1432343/
​
Tahilla, Tahilla
Patrick Brennan & wife Julia Mulcahy m May 7 1895 Sneem
​Name PATRICK BRENNAN JULIA MULCAHY
Address TAHILLA TAHILLA
Occupation NRNR
Father JOHN BRENNAN PATRICK NEILL
www.census.nationalarchives.ie/pages/1901/Kerry/Tahilla/Tahilla/1412088/
​
Toohana, Balyconry
Michael Brennan & wife Kate
son Denis Brennan & wife Mary Fitzgerald as per bapt of son Phillip July 10 1900
civilrecords.irishgenealogy.ie/churchrecords/images/birth_returns/births_1900/01979/1762854.pdf 
www.census.nationalarchives.ie/pages/1901/Kerry/Ballyconry/Toohana/1419379/

Toorrreennasliggaun, Caragh
Michael & his wife Julia (poss Corkery as per bapt cert Oct 21 1888)
www.census.nationalarchives.ie/pages/1901/Kerry/Caragh/Tooreennasliggaun/1416011/

Top St., Caher
Charles Brennan & wife Margaret Donnelly m Mar 22nd 1892
Name CHARLES BRENNAN MARGARET DONNELLY
Address CAHIRCIVEEN CAHIRCIVEEN
Father DANIEL BRENNAN DENIS DONNELLY
civilrecords.irishgenealogy.ie/churchrecords/images/marriage_returns/marriages_1892/10629/5872295.pdf
www.census.nationalarchives.ie/pages/1901/Kerry/Caher/Top_Street/1403840/

Tullig, Castleisland
Hanoria Brennan, single 
www.census.nationalarchives.ie/pages/1901/Kerry/Castleisland/Tullig/1427848/

I recently discovered a genetic cousin via Autosomal DNA testing whose Irish roots are in the name Gahan. My genetic cousin could be related to me on my maternal side but since we have to start somewhere I did a search of Brennan/Gahan marriages 1790-1863 on rootsireland.ie. (Civil Registration began in Ireland for Roman Catholics in 1864)
1790 Sept 19 Mooncoin Kilkenny John Gahan of Farrensarron Margaret Brennan of Farrensarron Wit. William Henebry & Richard Walsh & Thomas Dunphy
1792 Dec 11 Haggardstown, Co. Louth Thomas Brennan of Dundalk Ann McGahan of Priorlands Wit. Francis Richards & Jas Donely
1803 Jan 20 Killaveney, Co. Wicklow William Gahan Hester Brennan Wit. Francis Morton & John Gahan & Andrew Brennan
1824 Mar 2 Kilronan, Co. Roscommon James Guiheen Mary Brennan Wit. Thomas Guiheen & Celia Brennan
Note; since Celia is an uncommon name I searched for a Celia Brennan born in Kilronan. Found Celia born to Michael Brennan (could he be Mary Brennan's brother??) & Margaret Cooper 1840 Dec 28 ~~also Sara b 1835, Guy b 1837, Margaret b1847
1825 Feb 12 St. Canice's Co. Kilkenny Patrick Brennan Mary Gahan Wit. Nicholas Brennan & Nancy Ryan
1826 Nov 1 Clara, Co. Offaly Michael Brennan Jane Gahan
1834 Jan 23 Paulstown, Kilkenny James Brennan of Bornafea  Elizabeth Gahan of Bornafea Wit. Martin Brennan & John Gahan
1836 Nov 1 Paulstown, Kilkenny James Brennan of Goresbridge Margaret Gahan of Goresbridge Wit. Lawrence Murphy & Anastasia Bowe
1840 Mar 3 Enniscorthy, Co. Wexford Nicholas Gahan Margaret Brennan Wit. James Stapleton & Mary Leary
1848 Sept 11 Portarlington, Co. Laois Michael Brennan Bridget Gahan Wit. George & Eliza McDonald
1851 May 3 Ballymena, Co. Antrim Joseph Brennan Catherine McGahan Wit. Elizabeth Diamond & Anne Cronan
1863 Feb 17 St. Mullins, Co. Carlow Michael Brennan Anne Gahan Wit. Andrew Hickey & Elizabeth Doyle

If you have Brennan Gahan in your family tree I would be most grateful for further information particularly if your Gahan family have Tipperary roots.
You are welcome to share this research with others but please acknowledge the source of the research. by linking it back to this blog post.
Further information re Kilronan, Co. Roscommon
www.kilronanparish.ie/

On Dec. 9th 1864 Prior Brannan of Company A, 70th, US Colored Troops married Arrinda Adams of Thomas County, Georgia, in Natchez, Mississippi.
Prior was aged 28, born c 1836 and Arrinda aged 24, born c1840. Prior was described in his marriage certificate as Black, son of a Black mother and a Black father.  Arrinda was described as half White, her mother as three quarters White and her father as a quarter White.
Their witnesses were N S Hitchcock, Co. A, 70th, US Colored Troops &  Phineas Mixer, Ordained Minister.
I found the following brief record but cannot ascertain if it belongs to the same man. 
Mixer, Jr. , Phineas
​BATTLE UNIT NAME:
33rd Regiment, Indiana Infantry
SIDE:
Union
COMPANY:
SOLDIER'S RANK IN:
Private
SOLDIER'S RANK OUT:
Private
ALTERNATE NAME:
FILM NUMBER:
M540 ROLL 52
PLAQUE NUMBER:
NOTES:
none

I have also found Prior Brannan with another spelling of his name
Pryor Branun
United States Civil War Service Records of Union Colored Troops
NamePryor Branun
Event TypeMilitary Service
Event Year1864
Age (Original)27
Military Unit Note71st US Colored Infantry

 After stenuous efforts I have been unable to find Prior & Arrinda after their marriage so I would be grateful if anyone can add to their life story and honour his service. Thank you.

Sources
US Freedman's Bureau Marriages 
familysearch.org/ark:/61903/1:1:F161-3JP
​US Civil War Record of Union Colored Troops
​​familysearch.org/ark:/61903/1:1:JZKN-QYV
​National Park Service
www.nps.gov/civilwar/index.htm
​