My father is Daniel William Holter. His father's name was William Holter and he came from Ashland, Wisconsin. He married Anna Rauch and they lived in Freeport, NY but separated. They also had a son, Norbert, who died in the Korean War. William died in Chicago in the early 1950's.
I am now trying to search records in Wisconsin. I know Anna was German but am not sure about William. My brother, Norbert has a Swedish bible I am going to look through and see if it gives any more information. I have no idea who my great-grandmother was.