+--James Walker 
Mary Walker  (19 FEB 1805-)
|        +--Robert Morrison 
|     +--William Morrison  (30 NOV 1726-28 FEB 1778)
|     |  +-- Elizabeth 
|  +--Robert Morrison  (JAN 1747-10 JUN 1802)
|  |  +--Jane Rogers  (-AFT 1794)
+--Jane Morrison  (11 MAR 1778-15 SEP 1817)
   |  +--Adonijah Luce 
   +--Catherine Luce  (27 OCT 1747-)
      +--Abigail Athorn