+--William ALEXANDER 
         +--Alexander ALEXANDER  (1545-1581)
         |  +--Marion COUTTIE 
      +--William ALEXANDER, 1ST EARL OF STERLING  (1580-21 FEB 1640)
      |  |  +--Gilbert GRAHAM  (1521-24 APR 1573)
      |  +--Marion GRAHAM  (1525-1567)
      |     |  +--John KINCAID #  (1495-)
      |     +--Lady Helen KINCAID  (1511-1573)
      |        +--Margaret BELLENTYNE  (1500-)
   +--John ALEXANDER  (1603-11 DEC 1696)
   |  |  +--Sir William ERSKINE  (1555-12 FEB 1639)
   |  +--Janet ERSKINE, LADY STIRLING  (1567-10 MAY 1649)
   |     +--Joanna ERSKINE  (1550-1630)
+--George ALEXANDER  (1620-5 MAY 1703)
|  +--Agnes Elizabeth GRAHAM  (1597-1677)
Mary ALEXANDER  (20 OCT 1648-1728)
+--Susan SAGE  (1 OCT 1621-3 MAY 1684)