FEDOR OL'GOVICH (? - ca 1427)

He was the son of Oleg Ivanovich, grand prince of Ryazan and Yefrosina. He married about 1387 with Sofia, daughter of Dmitri Ivanovich Donskoi, grand prince of Moscow. Their sons were Vasili, prince of Ryazan; Ivan, grand prince of Ryazan; and their daughter was Vasilisa, who married Ivan Vladimirovich, prince of Serpukhov in 1401. The family is shown on this chart.