known as Ivan the Great born Jan. 22, 1440, Moscow died Oct. 27, 1505, Moscow Grand prince of Moscow (1462-1505). Determined to enlarge the territory he inherited from his father, Ivan led successful military campaigns against the Tatars in the south (1458) and east (1467-69). He subdued Novgorod (1478) and gained control of most of the remainder of Great Russia by 1485. He also renounced Moscow's subjection to the khan of the Golden Horde (1480) and won a final victory over the khan's sons in 1502. Stripping the boyars of much of their authority, he laid the administrative foundations of a centralized Russian state. Ivan IV the Terrible was his grandson. Russian Ivan Vasilyevich known as Ivan the Terrible born Aug. 25, 1530, Kolomenskoye, near Moscow died March 18, 1584, Moscow Grand prince of Moscow (1533-84) and first tsar of Russia (1547-84). Crowned tsar in 1547 after a long regency (1533-46), he embarked on wide-ranging reforms, including a centralized administration, church councils that systematized the church's affairs, and the first national assembly (1549). He also instituted reforms to limit the powers of the boyars. After conquering Kazan (1552) and Astrakhan (1556), he engaged in an unsuccessful war to control Livonia, fighting against Sweden and Poland (1558-83). After the defeat and the suspected treason of several Russian boyars, Ivan formed an oprichnina, a territory separate from the rest of the state and under his personal control. With a large bodyguard, he withdrew into his own entourage and left Russia's management to others. At the same time, he instituted a reign of terror, executing thousands of boyars and ravaging the city of Novgorod. During the 1570s he married five wives in nine years, and, in a fit of rage, he murdered his son Ivan, his only viable heir, in 1581. Russian Ivan Antonovich born Aug. 23, 1740, St. Petersburg, Russia died July 16, 1764, Shlisselburg Fortress, near St. Petersburg Infant emperor of Russia (1740-41). The grandnephew of Empress Anna, Ivan was proclaimed her heir and then emperor, with his mother as regent, when he was only eight weeks old. In 1741 they were deposed by Elizabeth, daughter of Peter I, and for the next 20 years he remained in solitary confinement in various prisons. In 1764, when an army officer tried to free Ivan to restore him to power and remove Catherine II, who had seized the throne in 1762, Ivan was assassinated by his jailers. Russian Ivan Alekseyevich born Sept. 6, 1666, Moscow, Russia died Feb. 8, 1696, Moscow Nominal tsar of Russia (1682-96). When his brother Tsar Fyodor III died, Ivan, a mentally deficient chronic invalid, was proclaimed coruler with his half brother Peter I, with Ivan's sister Sophia as regent. After Sophia's overthrow in 1689, Ivan was allowed to retain his official position, though he never participated in governmental affairs, devoting the bulk of his time to prayer, fasting, and pilgrimages. Albright Ivan Le Lorraine Bunin Ivan Alekseyevich Ivan Asen II Ivan III Ivan the Great Ivan IV Ivan the Terrible Ivan Vasilyevich Ivan VI Ivan Antonovich Ivan V Ivan Alekseyevich Konev Ivan Stepanovich Pavlov Ivan Petrovich Sikorsky Igor Ivan Turgenev Ivan Sergeyevich