Oleg II Ivanovich was
Prince of Ryazan and Grand Prince of
Ryazan
Ryazan ( rus, Рязань, p=rʲɪˈzanʲ, a=ru-Ryazan.ogg) is the largest city and administrative center of Ryazan Oblast, Russia. The city is located on the banks of the Oka River in Central Russia, southeast of Moscow. As of the 2010 Census ...
from 1350 to 1402.
He is best known for his rivalry with Prince
Dmitry of Moscow and his mysterious role in
Battle of Kulikovo
The Battle of Kulikovo (russian: Мамаево побоище, Донское побоище, Куликовская битва, битва на Куликовом поле) was fought between the armies of the Golden Horde, under the command ...
. Oleg was nominally an ally of
Golden Horde
The Golden Horde, self-designated as Ulug Ulus, 'Great State' in Turkic, was originally a Mongols, Mongol and later Turkicized khanate established in the 13th century and originating as the northwestern sector of the Mongol Empire. With the fr ...
, but he did not participate in the battle, and several of his boyars fought and died on the Russian side.
Grand Princes of Ryazan
14th-century rulers in Europe
His daughter is married to
Yury of Smolensk
Yury Svyatoslavich or Georgy Svyatoslavovich (russian: Юрий Святославович or Георгий Святославович) was the last sovereign ruler of the Principality of Smolensk and Bryansk (1386–95, 1401–04) whose life was ...
.{{Russia-royal-stub