Jim,
My name is Alexandra Dorgan. I am the daughter of Kathryn Geck, who was born in Dickinson, ND. Her grandmother (my great grandmother) on her father's maternal side was Catherine (Kate) Rabung, who was born in Ohio and came to ND with her family in the early 1900's. Her father was Peter Rabung who was also born in Ohio. I am doing some research on them and I have found that Nicholas Rabung (Peter's father) was married three times, and that his last spouse's name was Maria. Maybe this is how she fits in? It's a little confusing because so many of the first names are repeated, so it's been difficult to identify who is who and how they fit into the family tree. I'll let you know what I find in my research. It was really interesting to stumble across your post and find a the excerpts from this letter.