Adrian IV, Pope (Papal States) : All Data

Adrian IV, the only English Pope in history, ruled over the Papal States from 1154 to 1159. During his tenure, he faced several significant conflicts, including the Wars of the Guelphs and Ghibellines. These wars, which lasted from 1154 to 1183, were a series of power struggles between the supporters of the Pope (Guelphs) and the Holy Roman Emperor (Ghibellines). Although Adrian IV's reign ended before the conclusion of these wars, his papacy played a crucial role in shaping the early stages of this conflict, which would continue to impact Italy for decades to come.