David Roulston (Rolestone) married Susannah Bailey 17 Dec 1849 in Springvale, Haldimand Co, Ont. She was baptised 27 Jul 1827 in the Methodist Church of Carrickfergus, Co. Antrim, N. Ireland, daughter of James and Eliza (Johnstone) Bailey. In the 1881 census, David is listed with many of his children, living in Huron, Bruce Co, Ont. It is presumed the Susannah died prior to 1881, as David was listed with a different wife (Mary b. Scotland) in the 1881 census. Children of David and Susannah (Bailey) Roulston: Margaret b. c1849; Mary b. c1850; Matilda b. c1852; Johnston b. 1853; William b. c1854; James b. c1855; Catherine b. c1857; Rebecca Ann b. c1860.