Ancestry's ThruLines suggests that Thomas LEAVEY and Bridget KEOGAN were my 5x-great-grandparents - based on the research of a distant cousin. But I'm not yet sure if this is correct as I've found few DNA matches with LEAVEYs or KEOGANs in their trees. I could be wrong, though.
My 3x-great-grandmother was Rose ROGERS (said to be the granddaughter of Thomas and Bridget), who was born in the early 1800s, married Thomas DOYLE, and later lived in Aghamore Upper, Columkille/Colmcille Parish, Longford.
Have you taken a DNA test? So far I've identified about 30 descendants of Rose and Thomas who are DNA matches on Ancestry, so genetics might be able to confirm your suspicions - that is, if my cousin's theory is accurate.
Feel free to PM me for more details!