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Constantine I, Roman emperor

(Encyclopedia)Constantine I or Constantine the Great kŏnˈstəntēn, –tīn [key], 288?–337, Roman emperor, b. Naissus (present-day Niš, Serbia). He was the son of Constantius I and Helena and was named in ful...

Muhammad I, Ottoman sultan

(Encyclopedia)Muhammad I or Mehmet I mĕmĕtˈ [key] (Muhammad the Restorer), 1389?–1421, Ottoman sultan (1413–21), son of Beyazid I. By defeating his brothers he reunited most of his father's empire. He consol...

Michael I, Byzantine emperor

(Encyclopedia)Michael I (Michael Rangabe), d. c.845, Byzantine emperor (811–13), son-in-law of Nicephorus I. He supported orthodoxy against iconoclasm and recalled Theodore of Studium from exile. He recognized (8...

Nicholas I, Saint, pope

(Encyclopedia)Nicholas I, Saint, c.825–867, pope (858–67), a Roman; successor of Benedict III. He was a vigorous and politically active pope who arbitrated both temporal and religious disputes. His decisions of...

Manuel I, Byzantine emperor

(Encyclopedia)Manuel I (Manuel Comnenus) kŏmnēˈnəs [key], c.1120–1180, Byzantine emperor (1143–80), son and successor of John II. He began his reign with a war against the Seljuk Turks, the subjugation of R...

Leo I, Saint, pope

(Encyclopedia)Leo I, Saint (Saint Leo the Great), c.400–461, pope (440–61), an Italian; successor of St. Sixtus III. A Doctor of the Church, he was one of the greatest pontiffs of the early years of the church....

Leo I, Byzantine emperor

(Encyclopedia)Leo I, d. 474, Byzantine or East Roman emperor (457–74). Chosen by the senate to succeed Marcian, he sought to counteract the preponderance of Germans in the Roman army by enlisting Isaurians. A nav...

Maria II

(Encyclopedia)Maria II (Maria da Glória), 1819–53, queen of Portugal (1834–53), daughter of Peter IV (Pedro I of Brazil). Pedro, having succeeded to the Portuguese throne on the death (1826) of his father, Joh...

Rulers of England and Great Britain (table)

(Encyclopedia)Rulers of England and Great Britain(including dates of reign) Saxons and Danes House of Normandy House of Blois House of Plantagenet House of Lancaster House of York House of Tudor Ho...

Conrad I, ruler of the Holy Roman Empire

(Encyclopedia)Conrad I, d. 918, German king (911–18). As duke of Franconia he distinguished himself by military exploits and in 911 was elected successor to Louis the Child by the Franconian, Saxon, Bavarian, and...