The practice of issuing patents reflected the new association of the Riurikid princes with the Mongol khans; that association gradually altered the political, especially dynastic, structures inherited from Kievan Rus. In 1243 Batu issued a patent to Iaroslav Vsevolodich to rule in Vladimir; similarly,
When Alexander Nevsky died in 1263, the khan passed over the rebellious Andrei (who had become prince of Suzdal), and conferred the office of grand prince on their younger brothers—first Iaroslav Iaroslavich (d. 1271/2), then Vasilii (d. 1277). When the throne passed to the next generation, however, Alexander Nevsky’s sons competed to become grand prince of Vladimir. Like their father, they each appealed to the Mongols for help. But the horde itself was engaged in a power struggle that lasted through the 1280s and 1290s. As a result, Mongol support was divided: Alexander’s eldest son and legitimate heir received a patent and military assistance from Nogai, a powerful Mongol chieftain in the western portion of the horde’s lands, while his younger brother obtained the support of the khan at Sarai. The contest lasted until the elder brother died in 1294, and the younger legitimately succeeded to the throne. By 1299 the Mongols’ internal dissension ended with the military triumph of Khan Tokhta, the death of Nogai, and reassertion of the khan’s authority over the entire horde.
Even as Nevsky’s two sons waged their battles, two other princes—their younger brother Daniil and their cousin Mikhail Iaroslavich of Tver—emerged as influential political figures in north-eastern Rus. With Daniil’s death in 1303, followed by that of the grand prince in 1304, the throne of Vladimir passed with the approval of the khan to the next eligible member of their generation—Mikhail of Tver. But then a radically new situation arose. The princes of Moscow refused to recognize Mikhail. Under the leadership of Prince Iurii Daniilovich they went to war against him in 1305 and again in 1308. In 1313 Mikhail went to pay obeisance to the new Khan Uzbek. In his absence Iurii extended his own influence over Novgorod, whose commercial wealth was critical for satisfying the khan’s demand for tribute. When summoned to appear before the khan and account for his behaviour, Iurii deftly used his new resources to outbid and outbribe Mikhail. He not only avoided punishment, but won the hand of Uzbek’s sister in marriage as well as the patent for the throne of Vladimir. For his refusal to acquiesce Mikhail was recalled to the horde and in 1318 he was executed. Iurii held the throne of Vladimir until 1322.
According to dynastic rules, however, Prince Iurii of Moscow lacked legitimacy; his authority depended solely on the endorsement and military support of Uzbek. The khan’s favour was contingent upon Iurii’s ability to perform his functions as senior prince—to collect and deliver the tribute from Rus. But Iurii did not have the support of all the Riurikids; four times in as many years Uzbek had to dispatch military expeditions to assist his brother-in-law, and in 1322 he returned the throne of Vladimir to the legitimate heir, Alexander of Tver. Five years later an anti-Mongol uprising in Tver forced Alexander to flee. In the aftermath Iurii’s brother Ivan (known later as ‘Ivan Kalita’ or ‘Money-bags’) secured the Vladimir throne. With the exception of a few brief interludes later in the fourteenth century, the princes of Moscow retained the position of grand prince until their dynastic line expired at the end of the sixteenth century.