The Thomastown I was referring to was the one in County Kilkenny. It was a baptism record for a Kieran Burke b. 1826. This is less likely to be my gg-grandfather because he was born about 1818 according to U.S. Census records.
Another possible match I found at the Irish Family History Foundation was a marriage record for a Kieran Burke who married a Joanna Prendergast in Ballylooby Parish, County Tipperary in 1838. Since U.S. census records show Kiean's birth year as about 1818, this would be a reasonable possibility.
I don't believe my gg-grandfather was born and raised in County Offaly, I have come to believe he or his family must have moved to Offaly from some other county. I believe that his mother (Mary Flannagan) was from Kildare because in the cemetery where she is buried, close nearby is a monument to a Bridget Flannagan and the inscription says she was from Kildare. Bridget could have been a relative of Mary's & her reason for moving to Cincinnati Ohio in 1850.
Kieran's wife Anna (nee Feasty?? - spelling from death certificate is suspect) was from County Laois. Since I can find no marriage record here in the U.S. & since their U.S. Census forms state they were married in 1850 (same year as immigration) I have assumed that they were already married when they arrived in the U.S.
I'm beginning to believe that Kieran's parents (I don't know his father's first name) moved to Offaly after Kieran was born. They may have moved to the area around Portarlington which is close to the borders of Counties Kildare & Laois. As a young man he met Anna (maybe short for Joanna???) who lived in nearby Laois, & they lived as Cottiers or small land holders until emmigrating in 1850. Family lore says that he and Anna came to the U.S. via the port of New Orleans, and then traveled up the Mississippi & Ohio rivers by riverboat to Cincinnati Ohio. I remember reading somewhere that the poorest of the Irish emmigrants went to either Canada or New Orleans, because travel to New York and Boston was much more expensive.
Even if I don't find the exact townland that Kieran was from, I plan to visit Ireland again and travel to some of the places that I think he likely could have lived. Hopefully I'll meet some fellow Burke's while I am there.
Thanks,
Tim Burke