1900 census:
immigrated 1882, naturalized, German Silver Polisher, owns mortgage at 266 Ward Street. (Looks like Chris has a boarder as the next family is in the same building and is renting.)

Believe this is Albert Dorau's brother but need to establish common parents.

Death: still at 266 Ward. Spoon Buffer. 2 families in house. Married but no wife. Mother's name unknown, born in Germany. Father Christian.