A monk from Peterborough Abbey stole the arm of St Oswald from Bamburgh Castle and took it to his abbot at Peterborough in an effort to gain favour. Oswald was a convert to Christianity and King of Northumbria from 634 to 642. He spent much of his early life in exile, but when he returned to fight for his throne, he raised a cross and prayed for victory. Oswald won the battle and ruled as king of Northumbria until his death. While Oswald was king, he became known for his piety and generosity. During the celebration of an Easter feast, he supposedly gave away all the silver plates along with the food to the poor. The chronicles say his chaplain; Bishop Aidan blessed Oswald, saying “may this arm that has been so generous never perish”. When Oswald died in battle against King Penda of Mercia in 642, his arm was taken to Bamburgh where it remained uncorrupted. The arm remained the primary relic of Peterborough and the chapel of St Oswald still has a watch-tower where the monks safeguarded it day and night. St. Oswald’s arm disappeared from the chapel during the reformation along with its silver casket.