He also spent over a decade studying theology at the University of Paris, making a living as a tutor. He tutored two sons of the Bishop of Salisbury, Jocelin de Bohon, which might explain why he spent time at Old Sarum Cathedral, of which he had a harsh opinion. He also amused himself by writing songs in the Goliard tradition; some of his works appear in the Carmina Burana collection.
In 1166 he went to Sicily to where he tutored the future King William II of Sicily. William's mother, Margaret of Navarre, had written to relatives looking for an appropriate teacher. The Archbishop of Rouen sent Peter of Blois along with a party of Frenchmen. Later, the archbishop of Rouen got Peter involved in diplomacy surrounding the conflict between Henry II of England and Thomas Becket, Archbishop of Canterbury. Peter re-made the acquaintance of one of his earlier pupils, a son of the Bishop of Salisbury, Reginald Fitz Jocelin. Reginald was to become Bishop of Bath in 1173, but getting the pope's approval was difficult because of Reginald's support for King Henry in the Becket affair. Peter's letters in his defense helped to rally support.
By 1173, Peter was in England and working as chief letter-writer for Richard of Dover, who followed Becket as Archbishop of Canterbury. 1173 was a time of upheaval in England. Some of Henry's sons had followed his heir, Young King Henry, to the court of the King of France to plan a revolt against their father. Henry's wife, Eleanor of Aquitaine, had opposed Henry, and Peter wrote to her, criticizing her for leaving her husband.
Peter diligently wrote on Henry II's behalf to prelates and potentates in Europe, explaining that despite the rumors, Henry was not responsible for the murder of Becket. Peter's efforts helped his career. He was appointed Chancellor of the Archdiocese of Canterbury. He was also appointed Archdeacon of Bath. He was also made Dean of the College of Wolverhampton.
When Richard of Dover died, Peter's old teacher Baldwin of Forde became Archbishop of Canterbury. This looked like an excellent moment in Peter's life: someone he knew well and with whom he was now going to work closely. Instead, the new arrangement almost cost Peter his career, which I'll explain tomorrow.