William Floyd Washburn
1915 - 1981 (66 years)Drag or scroll to see more of the chart.
Ludwig H. Seng
1825-1891
1825-1891
Elisabetha Hoffmann
1827-1915
1827-1915
George L. Seng
1851-1909
1851-1909
Margaretha Magdalena Müller
1853-1905
1853-1905
William Washburn
1885-1929
1885-1929
Elizabeth Seng
1884-1978
1884-1978
William Floyd Washburn
1915-1981
1915-1981