Saints Sergius and Herman settled on the island of Valaam in 1329. The brethren gathered by them spread the light of Orthodoxy in this frontier land. The Karelian people began to regard Christianity with renewed suspicion, with its authority in the fourteenth century being undermined by the Swedes, who sought to spread Catholicism by means of the sword.
Sts Sergius and Herman died about the year 1353. They are also commemorated on June 28 (Their holy repose).