My mother's maiden name is Orth and her father, Benedict Cyril Orth, came from the St. Cloud area of Minnesota. His parents were Peter and Margarethe Orth. Grandpa was probably born in about 1907-8 and died in 1969-70. I don't think he had much contact with his family, but two or three of his sisters were nuns in the convent in Little Falls, MN.

Any leads welcome! :)