Where Did Family of Frank Henry Rudolph Live IN Germany

Frank Henry Rudolph was my Father, he was born on October 19, 1918 in Cumberland, Maryland. He had a brother,Paul, and a sister, verna. I believe his fathers name was John Henry Rudolph, although the name Conrad is possible. I would like to know where the Rudolph Family lived in Germany before they came to the United States and settled in Allegany County.