Here's a quick item following the Litvak SIG luncheon, at which East Prussia expert Ruth Leiserowitz was the featured speaker. I'll follow up later with details of her presentation about Jewish records from Memel, as well as on her session on Litvak migratory decisions from Monday—both plenty interesting and useful.
For now, I will mention that I spoke with her briefly afterwards about the Wohlgemuth families of Memel and Koenigsberg, about which she was very knowledgeable. We didn't have much time, but she told me that she had photographed a Wohlgemuth gravestone from the old Jewish cemetery in Kaliningrad and that it was up on her Judeninostreussen.de website.
Here's the link and here is the photo.
We have an Isaak Wohlgemuth in our family, the brother of our great grandfather Julius Wohlgemuth. However, this is a different one. Ours was born in Koenigsberg but died in Berlin in 1929. We already have a photograph of his gravestone from the Berlin Jewish cemetery. This new Isaac died in 1896, while our Isaac was born in 1865, so he is not likely to be a direct forebear (or he wouldn't have been named Isaac). But perhaps we have another uncle here. More work to do.