On 16 May 1695 when Thomas was 32, he married Mary Martin in Charlestown, MA. Born on 15 Jul 1667. Mary died in Charlestown, MA, on 20 Nov 1717; she was 50. Buried in Old Burying Ground, Charlestown.
Children of Thomas and Mary (Martin) Fosdick, born at Charlestown:
i. Thomas Fosdick, b. 13 Jun 1697;
ii. Mary Fosdick, b. 30 Jul 1699;
iii. Samuel Fosdick, b. 14 May 1701;
iv. Elizabeth Fosdick, b. 10 Mar 1702, d. 27 Aug 1704;
v. Elizabeth Fosdick, b. ca. 1705, m. Joseph Curtis;
vi. James Fosdick;
vii.Hannah Fosdick, b. ca. 1708, d. 1 Nov 1708;
viii. Anna Fosdick, b. Nov 1711/2, d. 14 JulL 1711/2;
ix. Anne Fosdick, b. ca. 1714; and
x. Lydia Fosdick, b. ca. 1716.