Ancestors of Davey Leroy Robertson

                     /--Dennis Robertson  b. 4 SEP 1909 at   d. 30 NOV 1950
             /--Dennis Gene Robertson
             |       |       /--Alfred B. Simpson  b. 14 SEP 1872 at   d. 11 JUN 1940
             |       \--Esther Bernice Simpson  b. 16 JUN 1911 at Colton, WA
             |               \--Eldora Susannah Cole  b. 14 JAN 1880 at La Cygne, KS  d. 9 MAR 1952
Davey Leroy Robertson
             \--May Streeder