Mikhail of Tver

Mikhail Yaroslavich (Russian: Михаил Ярославич; 1271 – 22 November 1318) was Prince of Tver from 1285 and Grand Prince of Vladimir from 1304 to 1314 and again from 1315 until his death in 1318. He was canonized and counted among the saints of the Russian Orthodox Church.

Mikhail Yaroslavich was the second son of Yaroslav III Yaroslavich of Tver, the younger brother of Aleksandr Nevsky; he succeeded his elder brother Yaroslav as the prince of Tver in 1285. His mother Xenia was the second spouse to Yaroslav III and is known as the saint Xenia of Tarusa. Upon the death of Andrei Aleksandrovich, Aleksandr Nevsky's son and Yaroslav's nephew, Mikhail became the grand prince of Vladimir in 1304, as was consistent with traditional succession practices. He was confirmed in office by Tokhta, the khan of the Golden Horde.

Source: Wikipedia — https://en.wikipedia.org/wiki/Mikhail_of_Tver