His career was derailed by his closeness to the disgraced Doge Marino Faliero and he was banished twice, the second time for poisoning his wife.
[7] In December 1360, in the aftermath of Marino Faliero's failed coup d'état, Pietro was denounced to the Council of Ten for having uttered words "against the honour of the Signoria" during his governorship.
Convicted on 22 October and sentenced to perpetual banishment, he was found residing in the house of Prosdocimo da Brazolo in Padua.
[1] In 1364, Filippa obtained a reduction in Pietro's sentence, but he had by then become alienated from Venetian society and his own family.
[10] For his murder of his wife, Pietro was sentenced again to perpetual banishment and spent the rest of his life wandering about Italy.
He left thousands of ducats to his illegitimate child, the children of Simonetta (born and unborn) and an otherwise unknown wife named Fioruzza and asked to be buried in Venice, in Santa Maria Gloriosa dei Frari.