I have Thomas Nixon in my family tree, but only because he was the husband of Susan, who was my great grand mother's sister. I have not been able to find out who his parents were, but I do have another Thomas Nixon born in Ireland married to Jane who had a son Thomas born abt 1849 at Canaan Mountain, Nova Scotia. Whether this is the same Thomas I do not know. The Thomas who married Susan Clem was born Mar 6 1840 but sometimes these dates are incorrect. I have his death as only before 1909 as he was already deceased when Susan died on Oct 30 1909. She was born Jul 2 1841, the daughter of Benijah and Margaret Clem. Hope this helps.