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Stuart, David, duke of Rothesay

(Encyclopedia) Stuart or Stewart, David, duke of RothesayStuart or Stewart, David, duke of Rothesayrŏthˈsē [key], 1378?–1402, Scottish prince; son and heir apparent of Robert III. On his father's…

Neoplatonism

(Encyclopedia) NeoplatonismNeoplatonismnēˌōplāˈtənĭzəm [key], ancient mystical philosophy based on the doctrines of Plato. Neoplatonism was an early influence on Christian thinkers. The Christian…

Wessel, Johann

(Encyclopedia) Wessel, JohannWessel, Johannyōˈhän vĕsˈəl [key], c.1420–1489, Dutch theologian and precursor of the Protestant Reformation, also known as Wessel Harmenss Gansfort or Goesevoyrd. He was…

Selected Mathematicians and Statisticians

René Descartes See also Notable Women Scientists People in the News Recent Obituaries Related Links Branches of Mathematics Development of Mathematics Factors and Fractions…

Mansur, al-, 914–1002, Moorish regent of Córdoba

(Encyclopedia) Mansur, al- (Muhammad ibn Abi-Amir al-Mansur billah), 914–1002, Moorish regent of Córdoba, known in Spanish as Almanzor. He became steward to Princess Subh, wife of the caliph Hakim II…

Argyll, John Campbell, 2d duke of

(Encyclopedia) Argyll, John Campbell, 2d duke of, 1678–1743, Scottish general; son of the 1st duke, whom he succeeded in 1703. For his ardent support of the union of England and Scotland he was…

Lancaster, house of

(Encyclopedia) Lancaster, house ofLancaster, house oflăngˈkəstər [key], royal family of England. The line was founded by the second son of Henry III, Edmund Crouchback, 1245–96, who was created earl…

Henry VI, king of England

(Encyclopedia) Henry VI, 1421–71, king of England (1422–61, 1470–71). Henry was a mild, honest, and pious man, a patron of literature and the arts and the founder of Eton College (1440). He was,…

Alexis, czar of Russia

(Encyclopedia) AlexisAlexisəlĕkˈsĭs [key] (Aleksey Mikhailovich)Alexisəlyĭksyāˈ mēkhīˈləvĭch [key], 1629–76, czar of Russia (1645–76), son and successor of Michael. His reign, marked by numerous…

Nicaea, First Council of

(Encyclopedia) Nicaea, First Council of, 325, 1st ecumenical council, convened by Roman Emperor Constantine the Great to solve the problems raised by Arianism. It has been said that 318 persons…