Saint Cosmas the Hymnographer, Bishop of Maiuma, was a native of Jerusalem. He was raised by the parents of Saint John of Damascus (December 4) together with their son, and he received a fine education. When Saint Cosmas came of age, he set out to one of the monasteries of Palestine, where he attained renown for his monastic exploits.
During a time of persecution against holy icons Saint Cosmas, and the venerable John, came forward to defend Orthodoxy. In the year 743 Cosmas was made Bishop of Maiuma. He died in old age, leaving behind many canons for feast days and a Triodion for four days of Holy Week.