My knowledge of the Thomas family only goes back a far as William. I only know the names and aproximate birth dates of his parents. Henry F. Thomas was born abt 1843. I don't know his parents, birth place or brothers and sisters. His mother, Mary Ann Shepard was born abt 1844. They were young when they had William. He was 18 and she was 17. I do believe that there is a Canadian connection with both Henry and Mary Ann. I have nothing to connect to your Thomas yet.
Thanks for your response. Terry email: firstname.lastname@example.org