Феодор Студит
The order is based upon the ascetic writings of Basil of Caesarea (329-379, in accordance with the Rule of St Basil laid down by him and later developed by Theodore the Studite (760-826), Theodosius of Kiev (†1074), Josaphat Kuntsevych (1580-1623), and the Metropolitan of Kiev Joseph Benjamin Rutsky (1574-1637).