In the 1901 Irish Census, 14,673 people are recorded with the surname Brennan (with this exact spelling) on the island of Ireland. So if your name is Brennan and you are searching for an Irish ancestor with the name Brennan, you will work hard in your search!
In alphabetical order by county;
Antrim 415
Armagh 150
Carlow 150
Cavan 566
Clare 95
Cork 361
Donegal 453
Down 199
Dublin 1,557
Fermanagh 54
Galway 546
Kerry 563
Kildare 328
Kilkenny 1,932
King's County 958
Leitrim 109
Limerick 181
Londonderry 99
Longford 120
Louth 260
Mayo 1,005
Meath 182
Monaghan 449
Queen's County 958
Roscommon 1,105
Sligo 1,224
Tipperary 352
Tyrone 92
Waterford 120
Westmeath 279
Wexford 477
Wicklow 175
Unsurprisingly, Kilkenny has the largest number of people with the Brennan name (1,932), Dublin is next and Sligo, Roscommon and Mayo follow close behind.
In addition there are
146 people recorded with the name Brenan (exact spelling),
O'Branan 10
Brannan 153
In alphabetical order by county;
Antrim 415
Armagh 150
Carlow 150
Cavan 566
Clare 95
Cork 361
Donegal 453
Down 199
Dublin 1,557
Fermanagh 54
Galway 546
Kerry 563
Kildare 328
Kilkenny 1,932
King's County 958
Leitrim 109
Limerick 181
Londonderry 99
Longford 120
Louth 260
Mayo 1,005
Meath 182
Monaghan 449
Queen's County 958
Roscommon 1,105
Sligo 1,224
Tipperary 352
Tyrone 92
Waterford 120
Westmeath 279
Wexford 477
Wicklow 175
Unsurprisingly, Kilkenny has the largest number of people with the Brennan name (1,932), Dublin is next and Sligo, Roscommon and Mayo follow close behind.
In addition there are
146 people recorded with the name Brenan (exact spelling),
O'Branan 10
Brannan 153
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