Giovanni Cornaro
Giovanni Cornaro (c. 1210 – after 1291) was a Venetian nobleman and diplomat of the Cornaro family. First recorded in 1238 as envoy to Pope Gregory IX over disputes with Genoa, he later served at Emperor Frederick II's court and helped elect Marino Morosini doge in 1249.
In 1274 he attended the Second Council of Lyon, and in 1291 led an embassy to his grandnephew King Andrew III of Hungary. His son Marco was grandfather of Doge Marco Cornaro.