The noble family of the Scaliger (/ˈskælɪdʒər/; also Scaligeri [skaˈliːdʒeri], from de Scalis or della Scala) were Lords of Verona. When Ezzelino III was elected podestà of the commune in 1226, he was able to convert the office into a permanent lordship. Upon his death the Great Council elected as podestà Mastino I, who succeeded in converting the signoria (seigniory) into a family inheritance, governing at first with the acquiescence of the commune, then, when they failed to re-elect him in 1262, he effected a coup d'état and was acclaimed capitano del popolo ("people's captain"), at the head of the commune's troops. In 1277 Mastino was killed by a faction of the nobles. The reign of his son Alberto as capitano (1277–1302) was one incessant war against the counts of San Bonifacio, who were aided by the House of Este. Of his three sons, Cangrande I inherited the podestà position in 1308, only the last shared the government (1308) and made a name as warrior, prince and patron of Dante, Petrarch and Giotto. By war or treaty he brought under his control the cities of Padua (1328), Treviso (1329), and Vicenza.
Cangrande I was succeeded by his nephews Mastino II (1329–51) and Alberto. Mastino, the richest and most powerful prince of his generation in Italy, continued his uncle's policy, conquering Brescia in 1332 and carrying his power beyond the Po. He purchased Parma (1335) and Lucca (1339). But a powerful league was formed against him in 1337: Florence, Venice, the Visconti, the Este and the Gonzaga all joined, and after a three years war, the Scaliger dominions were reduced to Verona and Vicenza.