 Instead, Godfrey himself seems to have used the more ambiguous term "princeps", or simply retained his title of "dux" from Lower Lorraine.According to William of Tyre, writing in the later 12th century when Godfrey had become a legendary hero, he refused to wear "a crown of gold" where Christ had worn "a crown of thorns".Robert the Monk is the only contemporary chronicler of the crusade to report that Godfrey took the title "king".