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John I, king of Portugal
(Encyclopedia)John I (John the Great), 1357?–1433, king of Portugal (1385–1433), illegitimate son of Peter I. He was made (1364) grand master of the Knights of Aviz and exercised his influence in opposition to ...John XII, pope
(Encyclopedia)John XII, c.937–964, pope (955–64), a Roman (count of Tusculum) named Octavian; successor of Agapetus II and predecessor of either Leo VIII or Benedict V. His father, Alberic, secured John's elect...John, Augustus Edwin
(Encyclopedia)John, Augustus Edwin, 1879–1961, British painter and etcher, b. Wales. John studied at the Slade School, London. A leading portrait painter, he had many important sitters, among them Queen Elizabeth...John VII, Byzantine emperor
(Encyclopedia)John VII (John Palaeologus) pāˌlēŏlˈəgəs [key], c.1370–1408, Byzantine emperor, grandson of John V. Backed by the sultan Beyazid I, he usurped (1390) the throne from John V but was dethroned ...land art
(Encyclopedia)land art or earthworks, art form developed in the late 1960s and early 70s by Robert Smithson, Robert Morris, Michael Heizer, and others, in which the artist employs the elements of nature in situ or ...Montreal Protocol
(Encyclopedia)Montreal Protocol, officially the Protocol on Substances That Deplete the Ozone Layer, treaty signed on Sept. 16, 1987, at Montreal by 25 nations; 197 nations are now parties to the accord. The protoc...John XXII, pope
(Encyclopedia)John XXII, 1244–1334, pope (1316–34), a Frenchman (b. Cahors) named Jacques Duèse; successor of Clement V. Formerly, he was often called John XXI. He reigned at Avignon. John was celebrated as a ...John I, Byzantine emperor
(Encyclopedia)John I (John Tzimisces) tsĭmĭsˈēz [key], c.925–976, Byzantine emperor (969–76). With the aid of Emperor Nicephorus II's wife, Theophano, John had Nicephorus murdered and himself proclaimed emp...John VI, Byzantine emperor
(Encyclopedia)John VI (John Cantacuzene) kănˌtəkyo͞ozēnˈ [key], c.1292–1383, Byzantine emperor (1347–54). He was chief minister under Andronicus III, after whose death he proclaimed himself emperor and ma...Leibniz, Gottfried Wilhelm, Baron von
(Encyclopedia)Leibniz or Leibnitz, Gottfried Wilhelm, Baron von both: gôtˈfrēt vĭlˈhĕlm bärônˈ fan līpˈnĭts [key], 1646–1716, German philosopher and mathematician, b. Leipzig. Although known primarily...Browse by Subject
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