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Justin II

(Encyclopedia)Justin II, d. 578, Byzantine emperor (565–78), nephew and successor to Justinian I. He allied himself with the Turks and resumed the wars with Persia. During his reign Slavs and Avars attacked the e...

Justinian II

(Encyclopedia)Justinian II (Justinian Rhinotmetus), 669–711, Byzantine emperor (685–95, 705–11), son and successor of Constantine IV. He successfully invaded Arab territory but lost the advantage through a tr...

Romanus III

(Encyclopedia)Romanus III (Romanus Argyrus) ärˈjĭrəs [key], c.968–1034, Byzantine emperor (1028–34). An aged senator, he married Zoë and thus succeeded to the throne. A capricious ruler, he depleted his tr...

Romanus IV

(Encyclopedia)Romanus IV (Romanus Diogenes) dīŏjˈənēz [key], d. 1072, Byzantine emperor (1068–71). A Cappadocian general, he succeeded Constantine X by marrying his widow, Eudocia Macrembolitissa. After some...

Andronicus II

(Encyclopedia)Andronicus II (Andronicus Palaeologus) pālēŏlˈəgəs [key], 1258–1332, Byzantine emperor (1282–1328), son and successor of Michael VIII. He devoted himself chiefly to church affairs, renewing ...

Photius

(Encyclopedia)Photius fōˈshəs [key], c.820–892?, Greek churchman and theologian, patriarch of Constantinople, b. Constantinople. He came of a noble Byzantine family. Photius was one of the most learned men of ...

Sviatoslav

(Encyclopedia)Sviatoslav or Svyatoslav both: svyäˈtəsləv [key], d. 972, duke of Kiev (945–72), son of Igor and of St. Olga. His mother acted as regent for him until c.962, when he came of age. During his reig...

Dalberg, Emmerich Joseph

(Encyclopedia)Dalberg, Emmerich Joseph (Emeric Joseph, duc de Dalberg) ĕmərēkˈ zhōzĕfˈ dälbârkˈ [key], 1773–1833, French diplomat of German origin; nephew of Karl Theodor von Dalberg. The foreign minist...

Dirac, Paul Adrien Maurice

(Encyclopedia)Dirac, Paul Adrien Maurice dĭrăkˈ [key], 1902–84, English physicist. He was educated at the Univ. of Bristol and St. John's College, Cambridge, and became professor of mathematics at Cambridge in...

Allais, Maurice Félix Charles

(Encyclopedia)Allais, Maurice Félix Charles môrēsˈ shärl älĕˈ [key], 1911–2010, French economist, Ph.D. Univ. of Paris, 1949. After working in the French mine administration, he joined the École National...