The Holy Monastic Martyrs of Karyes were martyred by the Latins who came with fire and sword onto Mount Athos during the reign of the Byzantine Emperor Michael Paleologos (1259-1282), an apostate from Orthodoxy.

Bursting in upon the Karyes monastery, the Latins burned and devastated the Church of the Protaton [the only basilica on the Holy Mountain, built in 965], "leaving no one alive." The Protos of the Holy Mountain, who had denounced the Latin rationalising as heresy, was after much torture hanged before the Protaton at the place called Chalkhos. Those hidden in caves around Karyes were cut down with swords. See October 10.