Hello, my name is Sonja Dalzell, I am a granddaughter of Erica Wulff. She was married to Joseph Klindt and they farmed near Walhalla, ND. My sister Sandra is working on our Klindt/Wulff ancestry. I sent her a link to your post and she will get in touch with you to share info soon. I live in Alaska and my sister is in Montana. I have a brother that also lives in Montana and one in Minnesota. You have named some people in your post that are our ancestors so I guess we are cousins.I believe my sister may have some of the info you are looking for and hopefully you have some we need too.