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When was Thomas Becket archbishop of Canterbury?

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St. Thomas Becket Murder of St. Thomas Becket, illustration from an English psalter, c. 1200; in the British Library.

Thomas Becket served as the archbishop of Canterbury from 1162 until his death in 1170.1

Prior to his appointment as archbishop, he served as the chancellor of England from 1155 to 1162. His tenure as archbishop was defined by a significant conflict with King Henry II regarding the authority of the Roman Catholic Church, which ultimately led to his murder in Canterbury Cathedral on December 29, 1170.12