Sarah was the daughter of Seth Comstock and Polly nee Arnold (1777-1858). She married Alanson Clark circa the early 1840s. Her age at her death was 77 years and ten months. She and Seth had eight known children. The burial place of their son Benjamin (c.1844- ) is unknown. Also unknown is the burial place of their daughter Harriett "Hattie" (1856-after 1915), who married Baxter Barrett and lived in New York state.