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Martin I, Saint, d. 655?, pope

(Encyclopedia)Martin I, Saint, d. 655?, pope (649–55?), an Italian, b. Todi; successor of Theodore I. On his accession he summoned a great council at the Lateran, as St. Maximus had urged, to deal with Monothelet...

Constantine IV, Byzantine emperor

(Encyclopedia)Constantine IV, c.652–685, Byzantine emperor (668–85), son and successor of Constans II. He defended Constantinople against the annual naval attacks of the Muslims, who finally withdrew in 678; Gr...

Muhammad IV, Ottoman sultan

(Encyclopedia)Muhammad IV or Mehmet IV, 1641–92, Ottoman sultan (1648–87). He was proclaimed sultan of the Ottoman Empire (Turkey) by the corps of Janissaries after the deposition and murder of his father, Sult...

Louis IV, French king

(Encyclopedia)Louis IV or Louis d'Outremer lwē do͞otrəmĕrˈ [key] [Fr.,=Louis from overseas], 921–54, French king (936–54), son of King Charles III (Charles the Simple). He spent his youth as an exile in En...

Celestine I, Saint

(Encyclopedia)Celestine I, Saint sĕlˈəstĭn [key], d. 432, pope (422–32), an Italian; successor of St. Boniface I. The opposition of St. Cyril of Alexandria to Nestorianism inspired both sides to appeal to the...

Romero, Saint Óscar

(Encyclopedia)Romero, Saint Óscar (Óscar Arnulfo Romero y Galdámez), 1917–80, Salvadoran bishop and human rights advocate. He studied at the Gregorian Univ. in Rome and was ordained in 1942. Returning to El Sa...

Cajetan, Saint

(Encyclopedia)Cajetan, Saint kăjˈətăn, käˌyātänˈ [key], 1480–1547, Italian churchman and reformer. Son of the count of Thiene, he studied civil and canon law, but abandoned work as a jurist at the papal ...

Wilfrid, Saint

(Encyclopedia)Wilfrid, Saint, 634–709?, English churchman, b. Northumbria, of noble parentage. He was educated at Lindisfarne and Canterbury. With Benedict Biscop he traveled to Lyons and Rome in 654; Wilfrid rem...

Valentinian III

(Encyclopedia)Valentinian III, 419–55, Roman emperor of the West (425–55). Two years after the death of his uncle, Honorius, he was placed on the throne by his cousin Theodosius II, who deposed the usurper John...

Maximus, Saint

(Encyclopedia)Maximus, Saint, c.580–662, Greek theologian. He was secretary to Emperor Heraclius and subsequently abbot at the monastery of Chrysopolis. To curb Monotheletism he went to Rome and persuaded Pope St...