Ancestors of Dorothy Knight Thomas

                     /--Jacob Emanuel Thomas  b. 12 FEB 1852 at Washington Co., MD  d. 17 APR 1908
             /--Harry J. E. Thomas  b. 3 JAN 1880 at Washington Co., MD  d. 1960
             |       |       /--Henry Clay Mumma  b. 6 MAY 1831 at Sharpsburg, Washington Co., MD  d. 2 FEB 1908
             |       \--Martha Ada Mumma  b. 7 JUL 1859 at Washington Co., MD  d. 11 DEC 1943
             |               \--Mary Jane Rohrbach  b. 18 JUL 1837 at Washington Co., MD  d. 9 NOV 1862
Dorothy Knight Thomas  b. 14 NOV 1909 at Baltimore, MD
             \--Helen Yeakle  b. 10 JUL 1887 at MD