Historical Context
In July 1274 the Emperor Michael VIII Palaiologos accepted union with the Roman Church at the Second Council of Lyons, a step he found expedient in the face of dangers from Charles of Anjou and other enemies of the restored empire. The union was deeply unpopular among much of the Byzantine clergy and laity, and the monks of Mount Athos were among its firmest opponents.
When agents of the union came to the Holy Mountain to enforce conformity, several Athonite communities resisted and a number of monks were martyred. Euthymius of Vatopedi and the twelve monks with him belong to this group of thirteenth-century Athonite confessors. By the tradition recorded at Vatopedi, Euthymius was drowned in the sea near Kalamitsi and his twelve disciples were hanged in the area known as Fourkovouni.