Ancestors of John Duncan Shearer

             /--George James Shearer  b. 4 OCT 1914 at   d. 1 JUN 2004
John Duncan Shearer
             |               /--John Thornton Mumma  b. 8 APR 1831 at Washington Co., MD  d. 27 FEB 1898
             |       /--Oscar Delovan Mumma  b. 8 AUG 1859 at La Crescent, Houston Co., MN  d. 26 MAY 1945
             |       |       \--Agnes Elizabeth Donovan  b. 3 SEP 1833 at OH  d. 24 AUG 1911
             \--Helen Louise "Heinie" Mumma  b. 8 APR 1915 at IA  d. 26 SEP 2003
                     |       /--John Shea
                     \--Mary Rose Shea  b. 3 APR 1878 at Cedar Rapids, IA  d. 21 NOV 1958