Frederick married Yankey, Opal Naomi on 10 Oct 1936 in Denison, Iowa, USA. Opal (daughter of Yankey, Ira John and Shives, Mabel, daughter of Yankey, Ira J and Shives, Mabel) was born in 1916 in East Boyer, Crawford, Iowa, USA; died on 6 Sep 2003 in Vail, Crawford County, Iowa, United States of America; was buried in 2003 in Denison, Crawford County, Iowa, United States of America. [Group Sheet] [Family Chart]