I'm trying to located information on a man named Heinrich Wolzick who apparently married a lady by the name of Frieda Sparka in Prussia between 1940-1960. Heinrich was German Kriegsmarine (senior petty officer in the navy) in World War 2 and was in Riga, Latvia between 1941-1944. I do not know any further details about him. He and his wife appear in a death notice for Julie Sparka (nee Julie Christofzik) aged 85 years in 1961 ("früher Wächtershausen, Kreis Johannisburg, Ostpreußen im Alter von 85 Jahren"). Julie was the mother of Frieda, and also the mother of her siblings: Margarete (Mrs. Gustav Ehehalt), Anna (Mrs. Heinrich Senktivany), Walter Sparka (who married Anneliese Koplin), "Emma Sparka, geb. Wawrzinsik" (not sure of her relationship), and "Gertrud Sparka, geb. Synofzick" (not sure of her relationship).
Any assistance in finding out information about this family would be gratefully welcomed.