On 13 Apr 1773 when Stephen was 36, he married Sarah Averill. Sarah died in Avon, Livingston County, New York in Nov 1831.
Children of Stephen & Sarah (Averill) Kelsey, born at Alford:
i. Electra Kelsey, b. 27 Dec 1773;
ii. Samuel Kelsey, b. 12 Jul 1775;
iii. Charles Kelsey, b. 17 Mar 1777;
iv. Silas Kelsey, b. 12 May 1779;
v. Anna Kelsey, b. 8 Mar 1781?;
vi. Lucy Kelsey, b. 28 Mar 1781;
vii. Anna Kelsey, b. 6 Apr 1782;
viii. Solomon Kelsey, b. 7 Aug 1784;
ix. Sybil Kelsey, b. 15 Jun 1787; and
x. Philander Kelsey, b. 27 Feb 1791.