Luchino's fate was characteristic. His wife, Isabella of Fieschi, had frequently suffered from his caprice and jealousy; at length she learned that he had resolved on putting her to death. Forced to anticipate his cruel intent, she poisoned him with the very drugs he had designed for her destruction. Luchino was succeeded by his brother Giovanni, Archbishop of Milan, the ablest of the sons of Matteo. Under his unscrupulous administration the Milanese territory was extended, until almost the whole of Lombardy was brought under the yoke of the vigorous and subtle tyrant. Although an ecclesiastic, he was as prompt to use the temporal as the spiritual sword. On his accession to power, Pope Clement the Sixth, then resident at Avignon, summoned him to appear at his tribunal to answer certain charges of heresy and schism. The papal legate sent with this commission had a further demand to make on behalf of the Pontiff--the restitution of Bologna, a fief of the church, which had been seized by the Milanese prelate, Giovanni Visconti, as well as the cession, by the latter, of either his temporal or spiritual authority, which the legate declared could not be lawfully united in the person of an archbishop. Giovanni insisted that the legate should repeat the propositions with which he was charged at church on the following Sunday: as prince and bishop he could only receive such a message in the presence of his subjects and the clergy of his province. On the appointed day, the archbishop having celebrated high-mass with unusual splendor, the legate announced the message with which he was charged by his Holiness. The people listened in silence, expecting a great discussion. But their astonishment was not greater than that of the legate, when Archbishop Giovanni stepped forth, with his crucifix in one hand, while with the other he drew from beneath his sacerdotal robes a naked sword, and exclaimed, "Behold the spiritual and temporal arms of Giovanni Visconti! By the help of God, with the one I will defend the other." The legate could obtain no other answer save that the archbishop declared that he had no intention of disobeying the pontiff's citation to appear at Avignon. He accordingly prepared, indeed, to enter such an appearance as would prevent citations of that kind in future.