Life and Ascetic Struggle
By tradition Vendemianus was born in Myzia and, while still young, became a devoted disciple of Saint Auxentius, one of the Fathers associated with the Fourth Ecumenical Council (Chalcedon, 451). He relocated to the monastery that Auxentius had founded on Mount Oxia, not far from Chalcedon, and settled there in the spiritual life.
He took up his abode in a cell within the crevice of a cliff near his teacher's hermitage. According to the synaxarion he spent forty-two years there, devoting his life to fasting and prayer and being tempted by demons. Because of this holy life and these struggles he was held to have been granted the gift of healing. He inhabited the mountain cliff for more than four decades and died around the year 512.