William Douglas
William was born in 1415 in Drumlanrig Castle, Durisdeer, Nithsdale, Dumfriesshire, Scotland.¹   He died at the age of 49 in 1464 in Drumlanrig Castle, Durisdeer, Nithsdale, Dumfriesshire, Scotland.¹ 

 Margaret Carlyle
Margaret was born in 1418 in Torthorwald Castle, Dumfriesshire, Scotland.¹ 

 Sir William Douglas 4th Lord of Drumlanrig
William was born in 1436 in Drumlanrig Castle, Durisdeer, Nithsdale, Dumfriesshire, Scotland.¹   He died as a war casualty, Battle of Kirtle, at the age of 48 on July 22nd, 1484 in Kirtle, Lochmaben, Dumfriesshire, Scotland.¹