William Otis Sawtelle (1874-1939) was born on July 7, 1874 to William H. Sawtelle and Addie Sawtelle in Bangor, Maine. William married Louise Coburn Burpee (1877-1941), daughter of George Egerton Burpee and Louise (Thissell) Burpee, on June 17, 1903 in Bangor, Maine. He was a physicist, historian, genealogist, and author. He founded the Islesford Historical Museum in 1919. William Otis Sawtelle died on September 22, 1939.