+--Alexis Dudley 
Florence A. Dudley 
|  +--Daniel Dudley 
+--Frances Dudley 
   |        +--Samuel Morison  (1671-29 SEP 1757)
   |        |  +--  
   |     +--Samuel Morrison  (13 Mar 1727-15 Mar 1775)
   |     |  +--Margaret Henry  (1685-30 APR 1774)
   |  +--David Morrison  (27 AUG 1763-8 DEC 1832)
   |  |  |  +--Randal Alexander 
   |  |  |  |  +--  
   |  |  +--Isabel Alexander  (16 FEB 1721/22-AFT 1776)
   |  |     +-- Janet 
   +--Martha Morrison  (1 APR 1792-FEB 1864)
      +--Mary Kimball