Do you have a Joseph and Catherine (Kate) Fischer in your family files? They signed a marriage certificate for Andrew Hoecherl and Therese Fischer (Fisher) in 1859 at Leavenworth, Brown, MN. I found a reference in a family History Book, which names Joseph Fisher as Terese's Father.
I also have a copy of a picture taken at their son's wedding with the following Fishers listed: Grandma Fischer, Ben Fischer's mother; Ann Fischer, Tillie Fischer, Doris Fischer, Mike Fischer. Thanks for any information you can offer.