The Book of Dow has lots of info on Thomas - 3 pages of details. Gives him as son of Isaac Dow and Martha Hanniford. It does have a different date of birth for Mary Barker - 27 Nov 1743 - and says she was from Methuren. However it gives Amesbury as location of birth of Isaac's children - and gives Pawtucket Falls as location of the marriage of Thomas and Mary on 28 Feb 1767. I am sure this is the same Thomas Dow as he was a minute man and eventually went to live with his children who had settled in Yorkshire NY. he died there 15 Mar 1822. For full details on the ancestors of Thomas (and descendants, too), please email me.