St. Gregory of Nyssa was a Christian bishop and saint. He was a younger brother of Basil the Great and a good friend of Gregory of Nazianzus. His significance has long been recognized in the Eastern Orthodox, Oriental Orthodox, Eastern Catholic and Roman Catholic branches of Christianity. Some historians identify Theosebia the deaconess as his wife, others hold that she, like Macrina the Younger, was actually a sister of Gregory and Basil. Gregory along with his brother Basil of Caesarea and Gre