Wilhelm was born in 1852 in Alt Krenzlin, Hagenow. In 1900 he was listed as a mailman in the Mecklenburg-Schwerin Census. Also according to the same document, he was married and a Lutheran.
German Census: Germany, Mecklenburg-Schwerin Census, 1900. Rastow: 494 (Hagenow) Zählkarten. Image 240. 
Have you taken a DNA test? If so, login to add it. If not, see our friends at Ancestry DNA.
Wilhelm is 27 degrees from Marie Curie, 40 degrees from Svante Arrhenius, 26 degrees from George Beadle, 33 degrees from Bjørnstjerne Bjørnson, 31 degrees from Lawrence Bragg, 22 degrees from Pearl S. Buck, 23 degrees from Sinclair Lewis, 29 degrees from Guglielmo Marconi, 25 degrees from Albert Michelson, 28 degrees from Gerty Cori, 24 degrees from Roger Sperry and 28 degrees from Chris Ferraiolo on our single family tree. Login to find your connection.