+--William Shirley  (-1807)
+--John Shirley  (MAR 1793-2 JAN 1863)
|  |     +--Robert Morrison 
|  |  +--William Morrison  (30 NOV 1726-28 FEB 1778)
|  |  |  +-- Elizabeth 
|  +--Mary Morrison  (1760-JUL 1843)
|     +--Jane Rogers  (-AFT 1794)
William Shirley 
+--Polly Graham  (-7 FEB 1868)