I have Brennan from Ontario area in the mid 1850's.
Patrick Brennan born abt. 1803 Ireland died before 1870 possibly in Bytown (Ontario)
He was the father of Thomas Brennan. Thomas would be my x2 grandfather. He came to Pittsburgh in the late 1880's.
Married a Jane Kelly and had Evelyn Brennan who in turn married Henry A. Wipfler (born in Mass. 1873 died in Pitts. 1899).
They had a daughter named named Evalyn Wipfler who married my grandfather Lester Mooney.
I have quite a few records on the Brennans in Canada. There seems to be a slight discrepancy in the Brennan name in Canada and who Thomas wife was. since I can't read french some I have are in french and very hard to read because of condition etc.
Awhile back I shared info on my Brennan line. I have come to find out what I had was wrong.
Thomas Brennan's parents were Mathew Brennan and Ann Quinn. Both born in Ireland.
They lived in Toronto Canada.