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John of Brienne

(Encyclopedia)John of Brienne brēĕnˈ [key], c.1170–1237, French crusader. He was a count and in 1210 married Mary, titular queen of Jerusalem. Mary died in 1212, and their daughter, Yolande (1212–28), succee...

Photius

(Encyclopedia)Photius fōˈshəs [key], c.820–892?, Greek churchman and theologian, patriarch of Constantinople, b. Constantinople. He came of a noble Byzantine family. Photius was one of the most learned men of ...

Gregory of Nyssa, Saint

(Encyclopedia)Gregory of Nyssa, Saint nĭsˈə [key], d. 394?, Cappadocian theologian; brother of St. Basil the Great and his successor as champion of orthodoxy. He became bishop of Nyssa in Cappadocia in 371, was ...

Robert of Courtenay

(Encyclopedia)Robert of Courtenay kôrtˈnē, ko͝ortənāˈ [key], d. 1228, Latin emperor of Constantinople (1218–28). His father, Peter of Courtenay, was elected by the Latin nobles to succeed Henry of Flanders...

patriarch, in Christian churches

(Encyclopedia)patriarch, in Christian churches, title of certain exalted bishops, implying authority over a number of other bishops. There were originally three patriarchates: the West, held by the bishop of Rome (...

Alexius V

(Encyclopedia)Alexius V (Alexius Ducas Mourtzouphlos) do͞oˈkəsmo͝ortˈso͞oflŏs [key], d. 1204, Byzantine emperor (1204), son-in-law of Alexius III. The head of the Byzantine national party, he overthrew emper...

Trullan synod

(Encyclopedia)Trullan synod: see Constantinople, Third Council of. ...

Byzantine art and architecture

(Encyclopedia)Byzantine art and architecture, works of art and structures works produced in the city of Byzantium after Constantine made it the capital of the Roman Empire (a.d. 330) and the work done under Byzanti...

John III, Byzantine emperor of Nicaea

(Encyclopedia)John III (John Ducas Vatatzes) do͝oˈkəs vətătˈzēz [key], d. 1254, Byzantine emperor of Nicaea (1222–54), successor and son-in-law of Theodore I. He extended his territory in Asia Minor and th...

Pechenegs

(Encyclopedia)Pechenegs pätsĭnäksˈ [key], nomadic people of the Turkic family. Their original home is not known, but in the 8th and 9th cent. they inhabited the region between the lower Volga and the Urals. Pus...