E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
The Chapter of Mitton. So the battle of Mitton was called, because so many priests took part therein. Hailes says that three hundred ecclesiastics fell in this battle, which was fought September 20th, 1319.
So many priests took part in the fight that the Scots called it the Chapter of Mittona meeting of the clergymen belonging to a cathedral being called a chapterSir Walter Scott: Tales of a Grandfather, x.