The Brennan name has many variations, one of those is Brannan (although in some cases Brannan is a completely distinct name of it's own.)
I found the family of Henry Brannan in Eatonton, Putnam, Georgia in 1870
Henry Brannan 59 Hay Labourer born Maryland
Mary Brannan 54 Keeping House born Virginia
William Brannan 15 Bar Clerk born Georgia
Phillis Brannan 86 No Occupation born Virginia
It seems as if Henry's wife is Mary, their son is William and Phillis possibly a mother to one member of the couple.
The 1870 Census also notes each person's race.
Henry and Phillis are listed as Black and Mary and William as Mulatto.
There are a number of Brannan/Brannon/Branin families listed in Virginia in the 1860 U. S. Slave Scedules.
Fielding A Branin, Culpepper, Virginia
Mary Brannon, Clarke, Virginia
George Brannon, South District, Pittsylvania, Virginia
John Brannon, Lewis, Virginia
M Brannan. Richmond, Ward 2, Henrico, Virginia
Further research will be neccessary before it is possible to ascertain if there is a connection between the Brannan family of Eatonton, Putnam, Georgia and any of the Virginia Brannan/Brannon/Branin families. If you have research on the subject please comment below.
To access further information about Brennan (exact spelling) in the 1860 Slave Schedule
www.martinebrennan.com/the-brennan-blog/brennan-1860-slave-schedules
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