1J.H. Beers & Co., Representative Men and Old Families of Southeastern Massachusetts, Vol. 1, p. 441 (1912).
"(II) Jotham Horton, of Rehoboth, married (first) May 29, 1729, Hannah Martin, and (second) Penelope Rounds. He died in 1797. His children by the first marriage were: Mercy, born May 5, 1730; Nathan, Oct. 1, 1733; Sarah, Nov. 11, 1735; Hannah, Dec, 19, 1738. The children of the second marriage were: James, born July 10, 1741; Barnet, May 6, 1744 (served in the war of the Revolution); Rhode, July 10, 1747; and Jotham, July 30, 1753.".