Fyodor Ivanovich of Starodub
Fyodor Ivanovich, called the Pious, was the fourth prince of Starodub-on-the-Klyazma, succeeding his father Ivan Mikhailovich in 1315. The chronicles record only one event of his life: in 1330 he was killed at the court of the Golden Horde, under unknown circumstances.
Venerated as a martyr for the Orthodox faith, he was canonized as a holy prince and buried at Aleksino, where his relics were said to heal the sick.