I am researching my gr grandfather's family. He was Friedrich Heidemann who died in Brown County MN in 1921. His obit lists a sister, Mrs. Amelia Kosanke, of Morgan MN. Amelia (a widow) had been married to Wm Kosanke - both born in Germany. She died in 1922. In the later 1930's my grandparents visited a Kosanke family (elderly couple) living in San Bernadino CA. Perhaps my grandfather's cousin. If anyone out there has any information or ideas I would appreciate hearing from you. Thank you! Sandy