Like many of you, I have hit a wall researching this line of my family back to Ireland. We have 2 different family versions of immigration. One says that Thomas immigrated to Canada with his mother, she died and he came to the US as a very young man. I did find a Thomas Keville on the 1850 census at a rooming house in Niagra NY. Another family story states that he came to the US from Ireland alone. Either way, by 1860 he married Adeline Crouch and settled in Sullivan, Madison County NY. I have found another family tree that suggests he was from Boyle, Roscommon and his father's name was Thomas b 1800 and mother was Honoria McWren. Any insight/information would be much appreciated!