Otto and Mary W Buehrmann, parents
Margaret was the daughter of Missouri natives John Henry "Otto"Buehrmann (c1850–c1918) and Mary L. Buehrmann (1855-). Mary was Otto's second wife. His first wife, after whom Margaret was presumably named, was Margaret Matilda Gaither (1821–1878). Otto was a merchant who relocated his family from St. Louis to Chicago after 1899 and before 1903. For a living, Otto gave lectures about merchandising and advertising. Otto's father, Otto Sr., had been a druggist who emigrated from Germany and, in the Civil War, served as a lieutenant in the Missouri Home Guard for the Union army.
Chicago Tribune (Chicago, Illinois) · 1 Jan 1904, Fri · Page 2 & 5
Chicago Tribune (Chicago, Illinois) · 2 Jan 1904, Sat · Page 12