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Louis I, king of Portugal
(Encyclopedia)Louis I, 1838–89, king of Portugal (1861–89), son of Maria II and Ferdinand II. He succeeded to the throne on the death of his brother Peter V. His reign was marked by much political turmoil and b...Constantine XI, Byzantine emperor
(Encyclopedia)Constantine XI (Constantine Palaeologus), d. 1453, last Byzantine emperor (1449–53), brother and successor of John VIII. To secure Western aid against the Turkish assault on what remained of the emp...Chabannes, Antoine de, comte de Dammartin
(Encyclopedia)Chabannes, Antoine de, comte de Dammartin äNtwänˈ də shäbänˈ kôNt də dämmärtăNˈ [key], 1408?–1488, French soldier in the Hundred Years War. He served with Joan of Arc, distinguishing hi...Philip the Good
(Encyclopedia)Philip the Good, 1396–1467, duke of Burgundy (1419–67); son of Duke John the Fearless. After his father was murdered (1419) at a meeting with the dauphin (later King Charles VII of France), Philip...Census of Marine Life
(Encyclopedia)Census of Marine Life, an international program (2001–2010) to assess and explain the diversity, distribution, and abundance of living organisms in the oceans. A project involving more than 2,700 sc...Dunois, Jean, comte de
(Encyclopedia)Dunois, Jean, comte de zhäN kôNt də dünwäˈ [key], c.1403–1468, French general, called the Bastard of Orléans; natural son of Louis, duc d'Orléans. He joined the Armagnacs in the civil war du...Francis II, duke of Brittany
(Encyclopedia)Francis II, 1435–88, duke of Brittany. He succeeded (1458) his uncle Arthur III. In his struggle with the French crown for the independence of his duchy, Francis entered (1465) the League of the Pub...Philip the Bold, king of France
(Encyclopedia)Philip the Bold: see Philip III, king of France. ...Ockeghem, Johannes
(Encyclopedia)Ockeghem, Johannes yōhänˈəs ŏkˈəgĕm [key], c.1410–1497, Flemish composer. Ockeghem is thought to have been a pupil of Gilles Binchois and was definitely taught by Guillaume Dufay. He himself...half-life
(Encyclopedia)half-life, measure of the average lifetime of a radioactive substance (see radioactivity) or an unstable subatomic particle. One half-life is the time required for one half of any given quantity of th...Browse by Subject
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