When Thomas Sherman Sr was born on 18 April 1754, in Rochester, Strafford, New Hampshire, United States, his father, Anthony Sherman, was 31 and his mother, Silence Ford, was 31. He married Betsey Keith in 1781. They were the parents of at least 8 sons and 6 daughters. He died on 2 February 1846, in Lebanon, York, Maine, United States, at the age of 91, and was buried in Acton, York, Maine, United States.