Looking for Helmuth Hammermeister or Wilhelm Hammermeister, first marriage with Olga Gogolin daughter of Wilhelmine Gogolin geb. Seiler and Ludwig Gogolin. With olga had son Helmuth and daughter Gertrude. Hammermeister married again after Olga's death. I am descendant of Lidia Gogolin, younger sister of Olga.
OlgaGogolin was originally from German Poland. I asume Hammermeister too.