You may want to contact the Sauk Prairie Area Historical Society. They have a section in thier newsletter for genealogy. I would suggest contacting Lola Huber, S7829 Huber Rd., North Freedom, WI 53951 for the SPHS. Also email me at firstname.lastname@example.org
. I may have a little information for you. I have the 12 Vol. of "Cemetery Inscriptions of Sauk County, Wisconsin". I couldn't locate William but maybe one of his wives.