I'm just finding these posts. Are you still on Ancestry? And are you still interested in the Mathias line? Let me know, as I may have information for you. I'm descended from Ottilia Matheis Edrich's brother.
I'm also interested in the book mentioned by Ginger - a history of the town in SD where Franz & Ottilia Edrich settled. Do you know anything about it?
Barbara (Mathias) Van Heel