Ancestors of J. William Van Dyke

                     /--William W. Van Dyke  b. SEP 1839 at IA  d. MAY 1917
             /--John Wilfred Van Dyke  b. NOV 1873 at IA
             |       |       /--David Mumma  b. 1 OCT 1819 at Washington Co., MD  d. 27 JUL 1882
             |       \--Margaret M. Mumma  b. AUG 1847 at Mt. Carroll Twp., Carroll Co., IL  d. DEC 1915
             |               \--Mary Catherine Harris  b. 21 JUN 1827 at Washington Co., MD  d. 6 AUG 1918
J. William Van Dyke  b. 1911 at Souix City, IA
             |       /--James F. Joy  b. ABT 1850 at Denmark
             \--Grace Helen Joy  b. 1879 at IA
                     \--Mary E.   b. ABT 1856 at IL