Looking for information on a William Purmann. He is believed to have been born in Manitowoc on January 1st, 1850. His death certificate from Chicago (5/16/1911) lists his father as Julius Purmann and his mother as "unknown". He married an Augusta Knack in Chicago in the 1880's. I have been told that William had siblings...uncertain how many or which gender. Any information on any Purmann in this area would be appreciated.