Have you come across any Paul and Emma Weinerts in your searching?
They were my grandparents. They last lived in Richmond, Michigan. They passed away in the late 50's and 60's. They had 3 sons; Elmer, Arthur, and Lorenz - my father. And 2 daughters; Hulda and Leona. All deceased.
My understanding is the immigrated in through Canada and down through northern Michigan to the Detroit area. My father was born in East Detroit, August 13, 1916.