Name days on January 10
Grigorios, Grigoris, Gregory, Grzegorz, Theosebia, Theosevia
Saints and feasts of January 10

Gregory of Nyssa
Hierarch, Γρηγόριος Νύσσης
St. Gregory of Nyssa was the younger brother of St. Basil the Great, born in Cappadocia in the fourth century to a family rich in saints. As Bishop of Nyssa he defended the Nicene faith against Arianism, endured exile for the truth, and took part in the Second Ecumenical Council in Constantinople in 381.
Dometian of Melitene
Hierarch, Δομετιανός
St. Dometian was Bishop of Melitene in Armenia in the sixth century, a kinsman of the Emperor Maurice. He governed his Church with wisdom and was sent on missions to Persia, where he helped many come to the faith.
Markianos the Presbyter
Venerable, Μαρκιανός
St. Markianos was a priest of Constantinople in the fifth century, born of a noble family, who spent his wealth on the poor and on the building of churches, among them the church of St. Anastasia. He was made steward of the Great Church.
Theosebia the Deaconess
Holy Woman, Θεοσεβία
St. Theosebia was a sister of St. Basil the Great and St. Gregory of Nyssa, from the family of St. Emmelia and St. Makrina. She served the Church as a deaconess and was praised by St. Gregory the Theologian for her holiness.
Antipas of Valaam
Venerable, Αντίπας ο Αθωνίτης
St. Antipas was born in Moldavia in 1816 and became a monk on Mount Athos, where he lived for years in the Romanian skete of the Forerunner. He later traveled to Russia and settled at the Valaam Monastery, where he lived in strict solitude and prayer.
Ammonios the Venerable
Venerable, Αμμώνιος
St. Ammonios is commemorated on January 10 as one of the desert ascetics of Egypt who reposed in peace. Tradition remembers him for the strictness of his fasting and the gentleness of his counsel.