I have the death certificate of Rosa A. Wittke Pemberton which shows her father's name to be August Wittke. Her mother's name is shown as unkown. There is a chance his wife may have been a Chippewa Indian from Minnesota, but nothing positive yet. Rosa was my GGrandmother, and I would like to find out if she was of Chippewa ancestry or what. Any information on her or her family would be greatly appreciated.