I am not sure if we are talking about the same Dora Techau or not - her parents did come from Germany (Fred and Doris Techau), they were my great great grandparents. They lived in Cedar County, Iowa, and are buried there. I only know that they had a daughter named Dora and in one of the obituaries her last name was Dahn - it is possible that she was married more than once. As soon as I get a chance to go to the genealogy library I will try to find some information about her - I will follow the lead that you gave me and see where it takes us. Thanks so much and please let me know if there is any further information that you have.