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Charles I, king of Naples and Sicily

(Encyclopedia)Charles I (Charles of Anjou), 1227–85, king of Naples and Sicily (1266–85), count of Anjou and Provence, youngest brother of King Louis IX of France. He took part in Louis's crusades to Egypt (124...

Ferdinand I, king of Aragón and Sicily

(Encyclopedia)Ferdinand I, 1379?–1416, king of Aragón and Sicily and count of Barcelona (1412–16), second son of John I of Castile; nephew and successor of Martin of Aragón. In 1406, Ferdinand became regent o...

Manuel I, 1469–1521, king of Portugal

(Encyclopedia)Manuel I, 1469–1521, king of Portugal (1495–1521), successor of John II. Manuel's reign was most notable for the successful continuation of Portugal's overseas enterprises. John had planned the ex...

Peter I, king of Aragón and Navarre

(Encyclopedia)Peter I, d. 1104, king of Aragón and Navarre (1094–1104), son and successor of Sancho I. He continued the fight against the Moors, taking (1096) Huesca and recapturing (1100) Barbastro. His brother...

Dukes, Leopold

(Encyclopedia)Dukes, Leopold, 1810–91, Hungarian Hebrew scholar. He made a collection of rabbinical proverbs and wrote on the history of Jewish literature, notably of Hebrew poetry in the Middle Ages. He also tra...

Damrosch, Leopold

(Encyclopedia)Damrosch, Leopold, 1832–85, German conductor. After taking a degree in medicine, he became (1857) first violinist in the ducal orchestra at Weimar, where he was a friend of Liszt and Wagner. In 1871...

Auenbrugger, Leopold

(Encyclopedia)Auenbrugger, Leopold lāˈōpôlt ouˈənbro͝ogər [key], 1722–1809, Viennese physician. His findings on the use of percussion in diagnosing chest diseases were published in 1761 (tr. On Percussion...

Auer, Leopold

(Encyclopedia)Auer, Leopold ouˈər [key], 1845–1930, Hungarian violinist and teacher, studied at the conservatories of Budapest and Vienna and with Joseph Joachim in Hanover. He taught at the St. Petersburg Cons...

Leopold, Aldo

(Encyclopedia)Leopold, Aldo, 1886–1948, American ecologist, b. Burlington, Iowa. He was an advocate for a “land ethic,” in which humans see themselves as part of a natural community. After work in the U.S. Fo...

Kronecker, Leopold

(Encyclopedia)Kronecker, Leopold lāˈōpôlt krōˈnĕkˌər [key], 1823–91, German mathematician. After making a fortune in business he devoted his attention to mathematics and became professor at the Univ. of ...