Background
All the later dukes of Tver descended from Yaroslav Yaroslavich. He was a son of Yaroslav II and younger brother of Alexander Nevsky.
All the later dukes of Tver descended from Yaroslav Yaroslavich. He was a son of Yaroslav II and younger brother of Alexander Nevsky.
There was also a Yaroslav III, Prince of Novgorod. Yaroslav III Yaroslavich (1230–1271) (Russian: Ярослав Ярославич) was the first Prince of Tver and the tenth Grand Prince of Vladimir from 1264 to 1271. Yaroslav fled to Ladoga whence he was summoned by Novgorodians to succeed Alexander as their military commander.
Upon Alexander"s death in 1263, Yaroslav quarrelled with Andrey as to who should become Grand Duke next.
They went to the Golden Horde for arbitration, which was in favour of Yaroslav. In 1270, the armies of three princes stood for a week near the town of Staraya Russa, ready for battle.
The metropolitan, however, managed to reconcile them.