Wilhelm married Karoline Friederike Knoll 23 Apr 1936, Ilsfeld, Heilbronn, Baden-Wurttemberg, Germany. Karoline (daughter of Gottlob Wilhelm Knoll and Karoline Friederike Obenland) was born 11 Aug 1904, Ilsfeld, Heilbronn, Baden-Wurttemberg, Germany; died 20 Sep 1962, Ilsfeld, Heilbronn, Baden-Wurttemberg, Germany. [Group Sheet]