Earlier blog posts identified Stargard as possible Wohlgemuth town
Review what was written here and here about the Wohlgemuths in April 2012.
The second post concerns a West Prussian citizenship law of 1812 that affected the lives of area Jews in important ways. The law made some Jews eligible for Prussian citizenship, giving them legal status and protection from persecution. Among the requirements to qualify, Jewish families were required to take on Western-style surnames instead of the patrilineal naming style that Jews had practiced for centuries. Before the coming of surnames, Jewish men were known by the combination their own name and their father's name.
In 2012, I had discovered 10 instances of Wohlgemuths on the 1812 citizenship list. I found they were clustered in towns to the southwest of Danzig and even made a map to show the distribution of towns. Two of the Wohlgemuths on the list, Moses Solomon Wohlgemuth and Herz Moses Wohlgemuth, were from the town of Stargard Gdanski, a sizable town 40 miles south and west of Danzig.
Since we have now learned from his marriage certificate that our ancestor Isaak Wohlgemuth was born in Preuss Stargard (in 1865), it seems logical to assume that Isaak and his father Leopold must descend from one of the Wohlgemuths from Stargard on the 1812 list.