Lanfranc

Lanfranc (1005  1010 at Pavia — 24 May 1089 at Canterbury) was a cleric, teacher and jurist who became Archbishop of Canterbury under William the Conqueror.
This celebrated Italian jurist gave up his career to become a monk at Bec in Normandy. In 1070 he became the Archbishop of Canterbury in England. This was the peak of an extraordinary life.
Life.
Lanfranc was born in the early years of the 11th century at Pavia in Italy. His father, Hanbald, held a rank equivalent to a magistrate. He was orphaned at an early age. Lanfranc was trained in the liberal arts. He crossed the Alps, and took up the role of teacher in France and eventually in Normandy. About 1039 he became the master of the cathedral school at Avranches. He taught for three years with much success. 
In 1042 he gave this up to become a monk in the newly founded Bec Abbey. He became the first prior of Bec Abbey in 1045. He became a friend of William, Duke of Normandy and by 1050 his counselor. Lanfranc then became the abbot of St Stephen in Normandy. 
In 1067, when Maurilius, Archbishop of Rouen, died, Lanfranc declined the position. He would not have been able to do so without the consent of William I. It is likely William had something bigger in mind for Lanfranc. In 1070 Stigand, the Archbishop of Canterbury was deposed by papal legates. William brought Lanfranc from Normandy to England to become the Archbishop of Canterbury.