What role did william of tyre in the crusades

William of Tyre (Latin: Willelmus Tyrensis; c. 1130 – 29 September 1186) was a medieval prelate and chronicler. As archbishop of Tyre, he is sometimes known as William II to distinguish him from his predecessor, William I, the Englishman, a former Prior of the Church of the Holy Sepulchre, who was Archbishop of Tyre from 1127 to 1135.[1] He grew up in Jerusalem at the height of the Kingdom of Jerusalem, which had been established in 1099 after the First Crusade, and he spent twenty years studying the liberal arts and canon law in the universities of Europe.

Explanation:

must repent and believe in god.

or the book

journey across time - chapter 10 "the rise of christianity"