Will Stewart and John is an English-language folk song, catalogued as Roud 3973 and Child 107.
John leaves him, claims to have quarrelled with him, and enters the earl's service.
Will says that if he beats her, he will have to fight all his men; John says that if he had to refuse, he might have done so courteously.
The king says the earl hates him more for that but gives him an earldom and makes his brothers lords.
He reaches the lady and tells her that his brother is ill. She agrees to meet Will again and they marry at once.