I have been looking for my 2nd Great Aunt Dorothea Frohriep. I think I may have found her in the 1860 Census living near Mankato MN with husband Jacob Pfaff. Also living with them is Louisa Florip(Frohrip) who would be her younger sister although she is listed as a servant. In working on Jacob I see he was in the Civil War in the 4th MN Volunteer Infantry Regiment and perhaps they eventually move to the Milwaukee WI area. I believe he died in 1897. It does not look as though they had children. Does this ring a bell for anyone??? Fingers crossed!!