I am just browsing for amusement but I think I could add something. Firstly I think it would help a lot if you could find a simple outline of European history in the 19th century and take a look at some maps. Muenchenwalde (the "u" had an umlaut so is usually spelt as a "ue") and Osseningken were both in former East Prussia. Osseningken changed its name to Grunau in 1931. In 1945 East Prussia was taken over by the Russians and Poles, and all Germans/German speakers expelled, the area was divided in half, the northern area being held by the Russians as an independent enclave. Koenigsberg (the capital) was renamed Kaliningrad and the whole area known as the Kaliningradskaya Oblast. Osseningken/Grunau was renamed Osinovka/Ossinowka. Muenchenwalde is no longer mentioned and could well have vanished as very small places which were completely depopulated have just disappeared, but it was definiterly in the same area (Memelland). Someone living in either of these places could easily have been born in Koenigsberg (not Konigsberg, again an umlaut). This does not explain name changes but I do think that your Kreimlofski should be Kriemlofski. The former would be pronouned "Crimelofski", the latter "Creamlofski" much closer to Krimlofski. Hope this helps a bit. Good luck