Konstantin Fyodorovich of Yaroslavl, Prince of Yaroslavl, was born circa 1287 in Sarai, Kharabali Rayon, Astrakhan Oblast, Russia to Fyodor Rostislavich Chyornyi (1233-1299) and Julduz of Sarai (c1268-c1315) and died 1321 Yaroslavl, Yaroslavl Oblast, Russia of unspecified causes.
There are few data about Konstantin Fyodorovich (Russian: Константин Фёдорович Улемец) - nicknamed "the Wise"), but it is assumed that he was co-ruler of the Principality of Yaroslavl with his brother David Fyodorovich of Yaroslavl
He was buried in the Transfiguration Monastery of Yaroslavl. On March 5, 1463, during repairs of the monastery the relics of Prince Konstantin and those of his father Fyodor Rostislavich and brother David Fyodorovich were found. Apparently, their bodies had been exhumed and shifted into a single coffin and reburied. The ecclesiastic authorities claimed that contact with the relics had induced miraculous healing of various illnesses. Konstantin was canonized in 1467 at the same time with his father and brother by the Russian orthodox church under the name of Saint Konstantin of Yaroslavl and is venerated on October 2nd (September 19th, Old Style).
Residences
| Regnal titles | ||
|---|---|---|
| Preceded by Fyodor Rostislavich Chyornyi (1287-1298) |
Prince of Yaroslavl (co-ruler with David Fyodorovich of Yaroslavl 1298–1321 |
Succeeded by Vasili Davidovich of Yaroslavl (1321-1345) |