This John Jeffers is my great, great, great, great grandfather. He was one of the original grantees of Truro, Nova Scotia. I have a copy of a deed from 1760 that lists him as Major(British) Jeffers, formerly of Roxbury, Massachusetts. He and Mary had several children, go here:
http://www.canadagenweb.org/archives/ns/colcbook.txt Chapter LII for more. The name there is incorrectly listed as Jeffrey, but Jeffers is correct.
Fred Jeffers, Bridgewater, NS