The following data is extracted from Genealogy and Biography of Ontario County, New York.
William, son of John McDowell, was born about 1790. In 1825 he bought two hundred and fifty acres of land on lot 46 in Barrington one mile south of Warsaw, paying four dollars an acre. He was a prosperous and substantial farmer. He was one of the organizers of the Presbyterian church in Barrington. He married, in 1813, Dorothea Decker. Children: William, lived at Barrington; John, mentioned elsewhere; Matthew, lived at Barrington and Wayne, where he died; Catharine, married Henry Cronkright. of Tyrone; Elizabeth, married Jonathan Taylor, of Barrington; Nancy, married Caleb I-ledges, of Bradford: Elsie, married Selah Crosby.
Source: Genealogy and Biography of Ontario County, New York