Wilhelm married Gertrude Elvena Petrass in 1919 in Victoria, Australia. Gertrude (daughter of Carl Heinrich Petrass and Johanna Eleonora Grabasch) was born on 12 May 1896 in Jung Jung (Vic) Australia; died on 17 Nov 1977 in Murtoa (Vic) Australia. [Group Sheet] [Family Chart]
