On 4 Feb 1749 when Phineas was 23, he married Hepzibah Griswold. Born on 31 May 1730 in Windsor, CT. Hepzibah died in Windsor, CT, on 29 Jun 1820; she was 90.

Hepzibah, daughter of Benjamin and Esther (Gaylord) Griswold.

Hepzibah first married Phineas Griswold, second John Perkins.