In 1077, the patriarch Sieghard of Belstein received the ducal title of Friuli from German king Henry IV, an act traditionally regarded as the birth of the state of Aquileia, or the Patrie dal Friûl. The Patriarchate subsequently extended its political control in the area: regions under Aquileian control in the following centuries included Trieste, Carinthia, Styria, Cadore and the central part of Istria. At its maximum height, the Patriarchate of Aquileia was one of the largest states in Italy. Noblemen from the Patriarchate were protagonists in the Crusades. In 1186 Patriarch Godfrey crowned Frederick Barbarossa's son, Henry VI, in the Basilica of Sant'Ambrogio in Milan as King of Italy; in retaliation, Pope Urban III deposed him.