1. WILLIAM1 DE DUGLAS died Aft. 1100 (Source: (1) Sir Robert Douglas, Scots Peerage., (2) David Hume of Godscroft, History of the House & Race of DOUGLAS and ANGUS, Edinburgh, 1743.).
Notes for WILLIAM DE DUGLAS:
Created Lord or dominus De Duglas by King Malcom Canmore in Forfar A.D.1057
Child of WILLIAM DE DUGLAS is:
