Otis married Sarah Sprague on 3 Apr 1790 in Brunswick, Cumberland, Maine, United States. Sarah (daughter of Nathaniel Sprague and Hannah Ford) was born on 5 Dec 1772 in Duxbury, Plymouth, Massachusetts, United States; was christened on 10 Sep 1780 in Duxbury, Plymouth, Massachusetts, United States; died on 28 Aug 1845 in Bath, Bath, Sagadahoc, Maine, United States. [Group Sheet] [Family Chart]