He is married to Lucy Smith.
They got married on April 11, 1765 at Massachusetts, USA, he was 28 years old.Source 1
Child(ren):
Genealogies of the Families and Descendants of the Early Settlers of Watertown, Massachusetts, Including Waltham and Weston
pg 425-426
3. Samuel, b. Sept. 13, 1736; m., Ap. 11, 1765, Lucy Smith. [Smith, 228.]
-1. Joel, b. Jan. 14, d. Aug., 1766.
-2. Joel, b. May 22, 1767; m. (pub. Sept. 17), 1797, Deborah Crosby, of Rox.
-3. Lucy, b. Jan. 31, 1769; m., Jan. I, 1792, Rufiis Bemis.
-4. Nahum, b. Nov. 16, 1770; m., May 28, 1804, Rhoda Hunting, of Needham; b. Ap. 16, 1780, and moved to Brookline.
-5. Luther, b. July 15. 1773.
-6. Sarah, b. Feb. 2, 1775; m. (pub. Feb. 9), 1801, David Ayers, of Needham.
-7. Elisha, b. Nov. 11, 1776.