Gregory Thaumaturgus
His parents were Basil and Emmelia of Caesarea-in-Cappadocia, who were banished for their faith in the reign of the Emperor Galerius Maximian, and fled into the deserts of Pontus. His grandmother was Macrina the Elder, who was instructed by Gregory Thaumaturgus. The youngest of ten, he was brother to St. Macrina the Younger and the two Cappadocian doctors, St. Basil of Caesarea and St. Gregory of Nyssa. Macrina, his eldest sister, exercised a great influence over his religious training, acting as his instructor and directing him toward the spiritual and ascetic life.