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William, count of Holland

(Encyclopedia)William, count of Holland, 1227?–1256, German king (1254–56), previously rival king (1247–54) to Conrad IV. William was chosen by Pope Innocent IV to succeed Henry Raspe (d. 1247) as antiking to...

Adalbert

(Encyclopedia)Adalbert, 1043–72, German churchman, archbishop of Hamburg-Bremen, a diocese that included Scandinavia. He was a favorite of Holy Roman Emperor Henry III, who appointed Adalbert to the archbishopric...

Francis I, emperor of Austria

(Encyclopedia)Francis I, emperor of Austria: see Francis II, Holy Roman emperor. ...

Lyons, First Council of

(Encyclopedia)Lyons, First Council of lyôNˈ [key], 1245, 13th ecumenical council of the Roman Catholic Church, convened at Lyons, France, by Pope Innocent IV to deal with his struggle with Holy Roman Emperor Fred...

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 ...

Mieszko I

(Encyclopedia)Mieszko I –chĭsläf [key], c.922–992, duke of Poland (962–92), the first important member of the Piast dynasty. The first German invasions of Poland began in 963. To avert this threat, Mieszko ...

Arles, kingdom of

(Encyclopedia)Arles, kingdom of, was formed in 933, when Rudolf II, king of Transjurane Burgundy, united the kingdom of Provence or Cisjurane Burgundy to his lands and established his capital at Arles. Holy Roman E...

Guibert of Ravenna

(Encyclopedia)Guibert of Ravenna gwĭbˈərt, gēbĕrˈ [key], d. 1100, Italian churchman, antipope (1080–1100) Clement III, b. Parma. As imperial chancellor of Italy (1057–63), he consistently supported the Ho...

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...

Raymond IV, count of Toulouse

(Encyclopedia)Raymond IV, c.1038–1105, count of Toulouse (1093–1105), leader in the First Crusade (see Crusades). He was also count of Saint Gilles and marquis of Provence. The first great prince to take the Cr...