I am looking for information on Catharine Claussen, born 1834 in Schleswig Germany. She married Frederick William Ehrig in NY in 1856. They lived in Davenport, Iowa in 1860 with two children. Frederick was murdered in 1869. Catharine is in the 1870 census with five children: Ottilie, Pauline, Antoinette, Fritz and Louise. Louise is my great grandmother and married Perry Cordill. Any information will be greatly appreciated.