Hi my name is Jim and I am from Augusta Wisconsin. A lot of my family grew up in the Hay Creek area of the Town of Bridge Creek. I also have Zank's in my family tree but do not have an Ottilie as yet. Looking through the church records and obituaries in local paper there were a lot of Zank's that lived in the area. Who are some others in your tree? Are they all from the same area? I will keep my eyes open each time I go back home to look for clues for you.