I am coming back to my messages from today regarding Dora Nienstedt. After studying the info from Germany more closely later today, it does NOT look as if Johann Ernst Friedrich Nienstedt born Aug. 28, 1835 and Margaretha Rebecka Lohsen, born September 13, 1840 who married in June 1861 (probably in Bederska) were the parents or the grandparents of Marie Henriette Dora Nienstedt, born 1877. Her father was Georg Ludwig Nienstedt, born January 28, 1839.
Both, Johann Ernst Friedrich born 1835 and Georg Ludwig born 1839 were brothers of my great grandfather Ernst Friedrich Nienstedt born 1837.
Dora Nienstedt married a certain William Koch in 1902. If you think it could be your grandmother, I have more information.
Please disregard my other two messages.
Irmgard Lochmann (mother's name is Dorothea Nienstedt)