Sir Andrew Douglas of Hermiston (d. bef. 1277) was a medieval Scottish nobleman.
Life
Although it cannot be proven except circumstantially, Douglas was possibly related along maternal lines to Archibald, Lord of Douglas (c.1198-1238) or related to Archibald's wife Margaret Crawford. There is charter evidence of the Lord of Douglas receiving the lands of Hermiston from Máel Coluim II, Earl of Fife[1]
Sir Andrew is the ancestor of the Earls of Morton, and the family of Douglas of Mains. Recent Y-DNA studies have shown this Andrew of Douglas to be unrelated paternally to descendants of Archibald's father William 1st Lord of Douglas.
Registrum honoris de Morton; a series of ancient charters of the earldom of Morton, with other original papers, ed.Thomson, McDonald, Innes. Bannatyne, Edinburgh 1853. [2]