Ezzelino III da Romano (25 April 1194, Tombolo7 October 1259) was an Italian feudal lord, a member of the Ezzelini family, in the March of Treviso (in modern Veneto). He was a close ally of the emperor Frederick II (r. 1220–1250), and ruled Verona, Vicenza and Padua for almost two decades. He became infamous as a cruel tyrant, and was, in fact, the most "notorious" of the "early tyrants". Biography Early life Ezzelino was a son of Ezzelino II da Romano, ruler of Bassano del Grappa and other fiefs in the Veneto, and Adelaide degli Alberti di Mangona, who came from a family of counts in Tuscany. At the age of four years, he was sent as a hostage to Verona, but nothing else is known about his childhood or education. In 1213, he took part in the siege of the castle of Este, which belonged to his father's archenemy, marquess Azzo VI of Este, who died in 1212 and later to his son Aldobrandino. According to the chronicler Rolandino of Padua, the young Ezzelino already showed a keen interest in siegecraft and acquired a hatred of the Este which would last his entire life. Rise to power 1226–1239 When Ezzelino II retired to a monastery in 1223, his possessions went to his sons Alberico, who received the castles and villages in the countryside of Vicenza (including the important centre of Bassano del Grappa) and Ezzelino, who received the possessions in the countryside of Treviso. In 1226 Ezzelino intervened in a factional struggle in Verona, aiding the Monticuli and Quattuorviginti against their enemies, the so-called pars comitis ("party of the count"), which was headed by the Veronese count Richard of San Bonifacio. From this time onwards Ezzelino became an important factor in Veronese politics and in 1226-1227 he had become or Lord Mayor of that city. He briefly lost Verona, but regained it in 1230. At this time control over Verona was important because Frederick II was in conflict with the Second Lombard League, an alliance of cities in Northern Italy. Whoever controlled Verona could block the Brenner Pass through the Alps, and thereby prevent the arrival of reinforcements for Frederick from Germany. Initially, Ezzelino favoured the Lombard League which could block the Brenner and emerge victorious from its first confrontation with the Emperor. However, he and his brother Alberico later changed sides, when it became apparent that the League