On 31 Aug 1780 when Isaac was 27, he first married
Ruth Brown, daughter of
Stephen Brown (18 Mar 1714-28 Sep 1795) &
Ruth Ballou (3 Jan 1719/20-25 Jun 1806), in Cumberland, RI.
665 Isaac Otis & Ruth Brown, dau. of Stephen Brown, married by Jotham Carpenter, Justice.
Born on 20 Oct 1754 in Cumberland, RI.665 Ruth died in Cumberland, RI in Mar 1781.
Child of Issac and Ruth (Brown) Otis:
i. William Otis, b. 1781 at Cumberland.