My materal grandmother was a Spafford from Belleville, Ontario. Her dad is Marshall Spafford and had a twin brother, Mark.
From conversations with family members, our branch is related to John Spofford of Rowley, MA. Prior to moving to Canada, our family apparently settled in Lancaster County, Pennslvania and moved to Canada during the American Revolution. For our Tory loyalty, we were given land grants by King George II as I understand was the case with other loyalists.
Best of luck to you in your research!