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Son of ? Koeller and Karoline Sophie Elizabeth Zumdahl - Ratmeyer - Koeller Half brother of Wilhelmina Minnie Wubbena; Edward Henry Ratmeyer; Edith E. (Ida) Kaney (Köhne); Martha Herbst; Henry Zumdahl and 4 others; Elizabeth Lizzie Brockmeier; Frederick (Fred) Christian Zumdahl; August E. Zumdahl and William J. Zumdahl « less