Semple, William Alexander. Genealogical History of the Family Semple: From 1214 to 1888. (Hartford, Connecticut: Press of the Case, Lockwood & Brainard Co., 1888), Page 51.S1
III. 256. John Semple, died February 1758, leaving issue by his wife, Janet Cochran, who predeceased her husband, October, 1751, three sons and four daughters.S1