Jacopo Tiepolo, doge of Venice
Jacopo Tiepolo (died 19 July 1249), also known as Giacomo Tiepolo, was Doge of Venice from 1229 to 1249. He had previously served as the first Venetian Duke of Crete, and two terms as Podestà of Constantinople (1218-1220 and 1224-1227). During his first term, following the capture and mysterious end of Peter of Courtenay, Tiepolo acted as de facto ruler of the Latin Empire, negotiating treaties on behalf of the Empire with Egypt and the Seljuk Turks.