In January 1349 he discovered Isabella's unfaithful behaviour, and announced for her a terrible punishment. A few days later he was found poisoned, the people soon nicknaming his wife Isabella del veleno ("Isabella of poison").
In January 1349, he discovered Isabella's unfaithful behavior and planned a severe punishment for her. A few days later, he was found dead from poisoning; the people soon began to call his wife "Isabella del veleno" (meaning "Isabella of poison").