Hard to say. In the 1861 census, my Angus's parents state they were born in Scotland. The death certificate, as filled out by this Angus's father himself, states he was born in Canada. I have seen that responses many people make on successive census forms changes, particularly with respect to place of birth, but I don't know why Angus's father would change his answer. Any theories? Why would a man list himself as a widower, versus single or divorced if he and his wife had merely gone their separate ways? His wife shows up in the 1900 US census in Maine, along with information that my Grandfather was born in Bucksport ME in 1898. I can't find any record of my GF's birth in the ancestry.com birth records files,either. The unknown is so frustrating.