These 377 Christians were captured in Thrace by the Bulgars, and were slain in various ways.
Among the martyrs where the bishops Manuel, George, Peter, and Leontius; and the presbyters Sionius, Gabriel, John, Leontius and Parodus.
Troparion — Tone 4
Your holy martyrs, O Lord, / Through their sufferings have received an incorruptible crown from You, our God. / For having Your strength, they laid low their adversaries, / And shattered the powerless boldness of demons. / Through their intercessions, save our souls!