In the document for the sale of the land in 1799, John signed his name as John Caffery. However, a number of versions of the family's name are found in the various documents cited in this website:
Cafferie - Hopkinton Deaths listing
Caffree - Research & documentation of Hopkinton's cellar holes, written by Harry Cheney
Caffrey - Hopper on History, newspaper article written by Gordon Hopper, citing Harry Cheney's research
Caffry - Sherborn marriage records, John Caffry & Mary Fanning, John Caffry & Grace Underwood
Cathery - 1790 US Census, showing John Cathery in Hopkinton, with 4 females in the household