+--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-)
Robert ALEXANDER  (1610-JUN 1638)
|  +--Sir William ERSKINE  (1555-12 FEB 1639)
+--Janet ERSKINE, LADY STIRLING  (1567-10 MAY 1649)
   +--Joanna ERSKINE  (1550-1630)