I am looking for information on Elizabeth Ketelsen b. May 1878 in Clinton Co., IA and her sister Sophie Margaret Ketelsen b. 4-23-1868 in Charlotte, Clinton Co., IA.
They were both married in Audubon Co., IA. Elizabeth married Carl Borkowski on 4-25-1902 and Sophie married Frederick Carl Polzin on 3-10-1890.
Frederick Carl Polzin's sister was Carl Borkowski's aunt by marriage. The Borkowskis and the Polzins both came from the same county (Kreis) in Germany. I believe this county was formerly called Butow and was in the German state of Pommerania which no longer exists. I mentioned this because it is possible that the Ketelsens came from the same area.