When John F Cory was born on 13 December 1903, in Michigan, United States, his father, William Borland Cory, was 27 and his mother, Myrtle Phillips, was 23. He married Genevieve E Swales on 17 April 1926, in Flint, Genesee, Michigan, United States. They were the parents of at least 1 daughter. He lived in Rock Island, Rock Island Township, Rock Island, Illinois, United States in 1940 and Vienna Township, Genesee, Michigan, United States in 1986. He died on 15 December 1986, in Pinellas, Florida, United States, at the age of 83, and was buried in West Branch, Ogemaw, Michigan, United States.