John married Margaret Wilhelmine Chapman in 1957. Margaret (daughter of Granville Chapman and Katherine Schwindeler) was born on 13 Mar 1908 in Quincy, Adams County, Illinois; died on 12 Jan 1970 in Van Nuys, Los Angeles County, California; was buried on 15 Jan 1970 in Los Angeles, Los Angeles County, California. [Group Sheet] [Family Chart]