He had a distinguished career as Captain General of the Sea, but was forced to sign a humiliating peace treaty with Suleiman I in 1540, ceding Venice's last possessions in the Peloponnese to the Ottoman Empire.

[1] Pietro Lando, son of Giovanni and Stella Foscari, devoted himself in his youth first to the study of Plato but then, like almost all the young Venetian nobles of his time, to trade in the East, without however getting rich.

Perhaps affected in the soul by the detention, he withdrew for some time from his public career even if in 1534 he managed to become Prosecutor of Saint Mark, a sign that, after all, his ascent to positions of greater responsibility had not stopped.

The great celebrations for his election were disturbed by the news of a quadruple murder at the hands of a certain Pietro Ramberti who, for money, killed his maternal aunt, his servant and the little children of the first.

It should be borne in mind that, precisely following this fact, it was decided to establish and then strengthen the office of the "State Inquisitors", known above all in the 18th century for the selective and almost manic control of Venetian society.