+--D. S. Cotton 
Helen May Cotton  (22 MAY 1861-)
|  +--Nelson A. Walker 
+--Mary Jane Walker  (13 MAY 1838-)
   |  +--Robert D. Taggart  (21 MAY 1781-24 MAR 1843)
   +--Lucinda Taggart  (29 OCT 1806-14 OCT 1876)
      |        +--Andrew Todd 
      |     +--Samuel Todd  (1726-30 MAR 1765)
      |  +--John Todd  (9 APR 1757-27 OCT 1846)
      |  |  |     +--John Morison  (1628-16 FEB 1736)
      |  |  |  +--John Morison  (1678-14 JUN 1776)
      |  |  |  |  +--Wife One 
      |  |  +--Hannah Morison  (10 APR 1730-30 NOV 1760)
      |  |     +--Margaret Wallace  (1687-18 APR 1769)
      +--Hannah Todd  (14 NOV 1783-8 NOV 1868)
         +--Rachel Duncan  (1759-26 APR 1815)