Becket was a 12th century chancellor and archbishop of Canterbury whose murder resulted in his canonisation.
Thomas Becket was born in around 1120, the son of a prosperous London merchant. He was well educated and quickly became an agent to Theobald, Archbishop of Canterbury, who sent him on several missions to Rome. Becket's talents were noticed by Henry II, who made him his chancellor and the two became close friends. When Theobald died in 1161, Henry made Becket archbishop. Becket transformed himself from a pleasure-loving courtier into a serious, simply-dressed cleric.
The king and his archbishop's friendship was put under strain when it became clear that Becket would now stand up for the church in its disagreements with the king. In 1164, realising the extent of Henry's displeasure, Becket fled into exile in France, and remained in exile for several years. He returned in 1170.
On the 29 December 1170, four knights, believing the king wanted Becket out of the way, confronted and murdered Becket in Canterbury Cathedral.
Becket was made a saint in 1173 and his shrine in Canterbury Cathedral became an important focus for pilgrimage.