Fyodor II of Ryazan

Fyodor Olgovich (Russian: Фёдор Ольгович), also known as Fyodor Olegovich (Russian: Фёдор Олегович), was Grand Prince of Ryazan from 1402 until his death in 1427. He was a son of Oleg II of Ryazan. Fyodor reigned during a period of unrest for the principality, fending off incursions from the Golden Horde. He was defeated and expelled from Ryazan by Ivan Vladimirovich, the prince of Pronsk, in 1408, but in turn defeated Ivan Vladimirovich at the Battle on the Smyadva (Russian: битва на Смядве) later the same year. The two later reconciled. He also agreed a peace treaty with Vasily I of Moscow, and married Vasily's sister Sofia, forming a peaceful relationship with the Grand Principality of Moscow. He was succeeded by his youngest son, Ivan.