Hey Carla- It's Chris, daughter of Ted and Becky. You might check out Ancestry.com for information if you haven't already. There is a lady on there that has information on Hermann (where he was born, etc.) and you can go back quite a bit on the Krause side of the family. I do know that Alma's siblings were as follows:
Johann Freidrich Ohlmann (married Bertha Porath) Emma Marie Ohlmann (Grandma Martha Riley's Mother) George Henry Ernest Ohlmann (married Serena Wren Elliott) Olga Marie Ohlmann (died infant) Amanda Pauline Matilda Ohlmann (married Wilhelm Porath) Albert Johann Ohlmann (married Riege) Hulda Carolina Ohlmann (married Harry Taylor) Edward J. Ohlmann (died 1952) Freida Anna Ohlmann (died car accident 1941 in Casper, WY) Helmuth D. Ohlmann (married Stolzenburg) Theadore E. Ohlmann (married Golter)
Freida and Theadore were killed in the same accident. Theadore drove an oil transport and Freida was riding with him. I recall Grandma Martha telling me about this and she had a newspaper clipping about it, but I couldn't say what happened to it after she passed away. Hope this helps. I have some more information at home that I will send you when I get back there if you like. Feel free to e-mail me if you like as I am also on this trail. Take care!