Sir Andrew Douglas of Hermiston (d. bef.
1277) was a medieval Scottish nobleman.
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.