Gherardo Gaddo della Gherardesca

Gherardo della Gherardesca, called Gaddo or il Giovane (c. 1284–1320), son of Bonifazio di Gherardo, was the Pisan popular leader who helped overthrow Uguccione della Faggiola. In April 1316 Pisa's mercantile families, with his backing, revolted against Uguccione's harsh signoria and drove him out, and Gherardo held the post of capitano del popolo from April to June.

He then shaped city policy through the commissions of sapientes and commanded the commune's mounted mercenaries. In 1317 his government made peace with the Tuscan Guelf cities at Naples. He died suddenly in 1320; his uncle Ranieri Nieri took power and became guardian to Gherardo's underage son Bonifazio.