Under the Franks, the city of Juliomagus took the name of the ancient tribe and became Angers. Under the Merovingians, the history of Anjou is obscure. It is not recorded as a county ("comitatus") until the time of the Carolingians. In the late ninth and early tenth centuries the viscounts (representatives of the counts) usurped comital authority and made Anjou an autonomous hereditary principality. The first dynasty of counts of Anjou, the House of Ingelger, ruled continuously down to 1205. In 1131, Count Fulk V became the King of Jerusalem; then in 1154, his grandson, Henry "Curtmantle" became King of England. The territories ruled by Henry and his successors, which stretched from Ireland to the Pyrenees, are often called the Angevin Empire. This empire was broken up by the French king Philip II, who confiscated the dynasty's northern French lands, including Anjou in 1205.