Hi Judy,
I am hoping that you are still using Ancestry or at least getting emails. I am also working on Gulden history (my great grandfather was Conrad Gulden)and have come to a dead end with Kate K. I did get the marriage certificate from Nicollet county, but it doesn't help much. I am trying to sort out the birth order for Conrad, Dora and Johanna Rosina just to figure out who the mother is for each of these children. If you want to compare notes, please email me at nancyrmattoon@gmail.com. Which of Peter's wives is your ancestor? Johanna Hauser?
Best regards,
Nancy M