Sarah B. Babbitt was born 2 Oct 1791 in New Hampshire, the daughter of Nathan and Anne (Newcomb) Babbitt. A descendant of Francis Newcomb, she married her second cousin, Everett Newcomb (3 Jun 1786 - 10 Sep 1836) as his second wife, 8 Apr 1834. Sarah died 19 Jun 1873. Everett's first wife, with whom he had five children, was Hannah Buckminster (1794-1830).
Sources: J.B. Newcomb, Babbitt Family History