Two years later he married the niece and supposed heiress of the last Byzantine emperor. Her father, Thomas Palaeologus, had fled to Rome where he died leaving one daughter Sophia. Pope Paul II wished to find her a husband, and Cardinal Bessarion of the Greek Church advised him to offer her hand to Ivan. The offer was accepted; Sophia received a dower from the Pope who still hoped to unite the two churches, and the bride was received with great honor in Ivan's territory. The grand duke probably had his eye on Constantinople, but deferred his claim to some favorable opportunity. With Sophia came many Greek nobles, artists, and learned men. Ivan, as may be judged from his gentle nature, was a patron of art, and had no prejudice against foreigners. Several Italians came to Moscow where their services were appreciated.
Ivan left Novgorod in peace during five years, when he thought it time to familiarize the citizens with the fact that their republic was a thing of the past. He needed a pretext; by a judicious use of money, his agents raised a mob against the boyards, who, being assaulted, invoked the strong arm of the law, in the person of Ivan. The grand duke came to Novgorod in 1475, to hold court. He at once ordered (p. 100) the arrest of the possadnik, Marfa's son, and a number of boyards who believed in a republic, had them put in chains and carried to Moscow. This was in violation of the charter, but Ivan had an elastic conscience. Next he tempted a scribe to mention him as _Sovereign_ instead of "lord," in an official document; and when, in a last effort to save the republic, Marfa's partisans killed a number of Ivan's friends, it was evidently his duty to restore order.
Upon his return to Moscow, he announced that Novgorod was the enemy of the Greek Church, and the ally of the Pope and of Lithuania. This so alarmed the Metropolitan and the priests that they begged Ivan to make war upon the wicked city. Many dukes and boyards, moved by loyalty for the church, and perhaps scenting spoils, flocked to his camp. Marfa's partisans in vain tried to arouse the citizens by the cry, "Let us die for liberty and St. Sophia!" It fell on deaf ears; every one for himself, was the general thought. Novgorod surrendered. Ivan guaranteed,--for just so long as it should suit him,--the people's lives and property, their ancient code of laws, and exemption from Muscovite service; but the vetché and office of possadnik were abolished, and with them died the republic. (1478.)