On 9 Dec 1731 when Peter was 22, he married Ann Gunn (33943) , daughter of Nathaniel Gunn (24 Jul 1682-1764) & Ann Hine (16112) (ca 1691-24 May 1787), in Milford, CT.65 Born on 25 Aug 1712 in Milford, CT.65 Ann died in Bethlehem, CT, on 9 Mar 1749; she was 36.64

Children of Peter and Ann (Gunn) Garnsey:
    i. Peter Garnsey, b. 31 Jul 1732, d. 22 Mar 1733;
    ii. Anna Garnsey, b. ca. 1734, d. 5 Feb1804;
    iii. Elizabeth Garnsey, b. 9 May 1736, d. 3 Aug 1813, m. 26 Sep 1757 Benajah Roots (b. 5 May 1725, d.15 Mar 1787);
    iv. Sybil Garnsey, b. ca. 1739, m. 11 May 1758 Ozias Pettibone (son of Jonathan Pettibone);
    v. Sarah Garnsey, b. ca. 1740, d. 11 Oct 1808, m. 24 Apr 1764 John Smalley (son of Benjamin & Mary (Baker) Smalley;
    vi. John Garnsey, b. ca. 1742.
    vii. Esther Garnsey, b. ca. 1743.
    viii. Solomon Garnsey, b. 19 Mar 1743/4, d. 5 Jan 1789, m. 15 Nov 1764 Sarah Kesson (b. 20 Aug 1745, dau. of James Kesson;
    ix. Richard Garnsey, b. ca. 1746, d. 5 Jul 1820, m. at Woodbury, CT, 18 Dec 1766 Eunice Mallory (b. 7 Sep 1746 at New Haven, CT, dau. of Caleb & Elizabeth (De Forest) Mallory); and
    x. Abigail Garnsey.