Assueton is a corruption for Swinton. Sir John Swinton, of Swinton, was a Scottish champion, noted for his courage and gigantic stature.
Their names were Robert Hart and Simon Glendinning. The chaplain was Richard Lundie, afterwards archdean of Aberdeen.—Godscroft. Hart, according to Wintown, was a knight. That historian says, no one knew how Douglas fell.
The banner of Douglas, upon this memorable occasion, was borne by his natural son, Archibald Douglas, ancestor of the family of Cavers, hereditary sheriffs of Teviotdale, amongst whose archives this glorious relique is still preserved. The earl, at his onset, is said to have charged his son to defend it to the last drop of his blood.
This prophecy occurs in the ballad as an ominous dream.