Feb. 11, 1879 Bourne Barnstable County Massachusetts, USA
Mar. 25, 1944 Newton Middlesex County Massachusetts, USA
He was the widower of Lillian Rae (Burt) Blackwell and the son of Wallace H. Blackwell and his wife Isabel Ellen (Fish) Blackwell of Sandwich, Mass. Families of both of his parents go back to the initial settlement of Sandwich and what became Barnstable County. John and Lillian were parents of seven children. John was employed as a machinist with Carver Cotton Gin Co., East Bridgewater, Mass.