[11] In 1432, he served as luogotenente (lieutenant) of Friuli in Udine, where he entertained Ciriaco d'Ancona.
In 1420, while his brother Marco was serving as podestà of Bergamo, he wrote a prologue to its laws, Proemium in leges et statuta Pergami.
He translated Plutarch's lives of Cimon, Lucullus and Phocion from Greek into Latin.
[13] His treatise Regulae artificialis memoriae ('Rules on the Art of Memory'), addressed to his son, elaborates a complicated system of mnemonic devices.
[13] In formal Italian with Venetian characteristics, he wrote laude, strambotti and both short and long love songs.
Musical settings for some of the laude survive, but not for the strambotti.The longer love poems are collected in his Canzoniere, the shorter in Il fiore delle … canzonette del … Lunardo Iustiniano, published at Venice around 1472.
His correspondents include Ciriaco d'Ancona, Guarino Veronese, Francesco Barbaro, Benedetto Bursa, Federico Cornaro, Francesco Filelfo, Andrea Giuliani, Barbone Morosini, Lauro Quirini, Palla Strozzi, Pietro Tommasi and Ambrogio Traversari.