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Perutz, Max Ferdinand

(Encyclopedia)Perutz, Max Ferdinand, 1914–2002, British molecular biologist, b. Vienna. One of the pioneers in the field of molecular biology, Perutz studied chemistry at the Univ. of Vienna (1932–36) and then ...

Gratian, Roman emperor of the West

(Encyclopedia)Gratian grāˈshən [key], 359–83, Roman emperor of the West (375–83). At the death of his father, Valentinian I, he accepted the army's election of his brother, Valentinian II, as his colleague. ...

John III, Byzantine emperor of Nicaea

(Encyclopedia)John III (John Ducas Vatatzes) do͝oˈkəs vətătˈzēz [key], d. 1254, Byzantine emperor of Nicaea (1222–54), successor and son-in-law of Theodore I. He extended his territory in Asia Minor and th...

John IV, Byzantine emperor of Nicaea

(Encyclopedia)John IV (John Lascaris) lăsˈkərĭs [key], b. c.1250, d. after 1273, Byzantine emperor of Nicaea (1258–61), son and successor (under a regency) of Theodore II and last of the Lascarids. Michael Pa...

Maximilian, 1832–67, emperor of Mexico

(Encyclopedia)Maximilian, 1832–67, emperor of Mexico (1864–67). As the Austrian archduke Ferdinand Maximilian, he was denied a share in the imperial government by his reactionary brother, Emperor Francis Joseph...

Louis I, emperor of the West

(Encyclopedia)Louis I or Louis the Pious, Fr. Louis le Pieux or Louis le Débonnaire, 778–840, emperor of the West (814–40), son and successor of Charlemagne. He was crowned king of Aquitaine in 781 and co-empe...

Louis II, emperor of the West

(Encyclopedia)Louis II, d. 875, emperor of the West (855–75), king of Italy (844–75), son of Emperor of the West Lothair I. In 844, Lothair I designated him king of Italy and in 850 he was crowned emperor of th...

Theodore II , Byzantine emperor of Nicaea

(Encyclopedia)Theodore II (Theodore Lascaris), 1222–58, Byzantine emperor of Nicaea (1254–58), son and successor of John III. He fought the Bulgarians and temporarily regained parts of Thrace. He made Nicaea a ...

Baldwin I, Latin emperor of Constantinople

(Encyclopedia)Baldwin I bôlˈdwĭn [key], 1171–1205, 1st Latin emperor of Constantinople (1204–5). The count of Flanders (as Baldwin IX), he was a leader in the Fourth Crusade (see Crusades). After the seizure...

Baldwin II, Latin emperor of Constantinople

(Encyclopedia)Baldwin II, 1217–73, last Latin emperor of Constantinople (1228–61), brother and successor of Robert of Courtenay. He began his personal rule only after the death (1237) of his father-in-law, John...