James Hatley is Child ballad 244, existing in several variants. It appears to have no historical basis.

Synopsis

A villain—Sir Fenwick, False Fennick, or fause Phenix—steals the king's jewels. He lays the blame on James Hatley or Jamie O’Lee.

The variants diverge sharply.

In one, the king's daughter steals the keys to ask him whether he did it. Accepting his word, she arranges for a trial by combat

Trial by combat

Trial by combat was a method of Germanic law to settle accusations in the absence of witnesses or a confession, in which two parties in dispute fought in single combat; the winner of the fight was proclaimed to be right. In essence, it is a judicially sanctioned duel...

. James kills Fenwick, who confesses while dying. The king's daughter offers to marry him.

In another, he is the page to the king's son. He appeals to the prince, who fights for him. False Fennick confesses, and the prince resolves to give his lands to James.

In a third, the king's son escorts him to the trial by combat, because he does not trust fause Phenix. James fights and kills him. He confesses before he dies. The royal family promise him appointments and lands; James declares he would rather be the prince's page. The king dresses him richly for the role.

In both versions where James fights, the ballad observes that James is fifteen and the thief in his thirties, making the triumph remarkable.