Saint Vendemianus (Bendemianus) was born in Myzia. In his youth he was a disciple of Saint Auxentius, one of the Fathers of the Fourth Ecumenical Council. He went to the monastery founded by Saint Auxentius (February 14) on Mount Oxia, not far from Chalcedon (Asia Minor), where he lived in asceticism for forty-two years at the cell of his teacher in the crevice of a cliff. He spent his life in fasting and prayer, and was tempted by demons. Because of his holy life and spiritual struggles, the saint was granted the gift of healing. He died around the year 512.