Fyodor Rostislavich the Black
Fyodor Rostislavich, called the Black (1233–1299), was a son of Rostislav Mstislavich and prince of Smolensk and Yaroslavl. Around 1260 he married Anastasia of Yaroslavl, and after her death a khan's daughter at the Golden Horde, returning with a yarlyk to rule Yaroslavl.
He took Smolensk in 1279 and joined Dyuden's 1293 Tatar raid that ravaged northeastern Rus cities. He died a monk at Yaroslavl in 1299 and was canonized in 1467 with his sons David and Konstantin, the first Yaroslavl saints.