My husband's paternal grandmother's maiden name was Rosga. She was born in Chicago in 1894, d. 1974 Dallas, TX.Her father was John Rosga, b. 1866 in Brandenburg, Prussia, d. 1891 in Chicago. He was a tailor. and married Mary Hallas 1891. His father was Joseph Rosga called "The Captain", a captain of a Cavalry unit in Brandenburg, Prussia. His wife was Mary Ellen Precht. Dates for them unknown.