Ancestors of David Dwight Duncan

                     /--Emmett Woodrow Duncan  b. 19 APR 1919 at 
             /--Emmett Woodrow Duncan
             |       |       /--Irvin Dennis Graybill  b. 9 FEB 1873 at   d. 29 APR 1957 =>
             |       \--Ottie Rachel Graybill  b. 18 MAY 1921 at Troutville, VA  d. 22 OCT 1964
             |               \--Nora Estelle Creasy  b. 22 MAY 1894 at   d. 22 OCT 1964
David Dwight Duncan
             \--Judith Marie Parkhurst