page 59 of 960 of Sir Thomas Malory: Le Morte Darthur: The Definitive Original Text Edition

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Royns begs for mercy and thus Arthur’s foe in Ireland is brought to the knee with the work of Balyn but Balyn doesn’t know the name of the knights who defeated him and only calls him the Knight of the Two Swords. Merlin then reveals it was the brothers. Arthur is still pities he had been wroth with Balyn.