Frederick I

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Frederick I

, Holy Roman emperor and German king
Frederick I or Frederick Barbarossa (bärbərôsˈə) [Ital.,=red beard], c.1125–90, Holy Roman emperor (1155–90) and German king (1152–90), son of Frederick of Hohenstaufen, duke of Swabia, nephew and successor of Holy Roman Emperor Conrad III.

Restoration of Imperial Power

His mother, Judith, was a Guelph (see Guelphs), and Frederick frequently acted as a mediator between his Hohenstaufen uncle, Conrad, and his Guelph cousin, Henry the Lion. Prior to his death Conrad III named Frederick as his successor, hoping that Frederick's reign would end the discord between the rival houses of Hohenstaufen and Guelphs. Frederick's coronation as emperor in Rome was delayed by unrest in Germany and by the revolutionary commune of Rome (1143–55), headed by Arnold of Brescia, which controlled the city. In 1152, Frederick pacified Germany by proclaiming a general land peace to end the anarchy, and in 1156 he satisfied Henry the Lion by restoring the duchy of Bavaria to him, at the same time making Austria into a new duchy as a counterweight to Henry's power.

In Italy, Frederick's policy was to restore the imperial power, which had virtually disappeared as a result of neglect by previous emperors. It was thus necessary for him to conciliate the pope. In a treaty (1153) with Pope Eugene III, Frederick promised to assist him against Arnold of Brescia and against the powerful Normans in Sicily. Frederick entered Italy in 1154 and was crowned in Rome (June 18, 1155) amid hostile demonstrations. The reluctance of his troops to remain in Italy forced him to return to Germany without assisting the new pope, Adrian IV, against King William I of Sicily. Adrian, obliged to ally himself (1156) with William, turned against Frederick.

At the Diet of Besançon (1157) the papal legate presented a letter that Frederick interpreted as a claim by the pope that the empire was a papal fief. Frederick replied in a manifesto that he held the throne “through the election of the princes from God alone” and prepared to invade Italy, where Milan had begun the conquest of Lombardy. Adrian explained that he had not intended that interpretation of his words, but Frederick entered Italy, seized Milan, and at the Diet of Roncaglia (1158) laid claim, as emperor and king of the Lombards, to all imperial rights, including the appointment of an imperial podesta, or governor, in every town.

The rapacity of his German officials led to the revolt (1159) of Milan, Brescia, Crema, and their allies, secretly encouraged by Adrian IV. After a long siege, Frederick stormed and burned Milan (1162). Moreover he set up an antipope to Adrian's successor, Alexander III, who excommunicated him. Frederick withdrew temporarily, but returned in 1166, captured Rome, and was preparing to attack the pope's Sicilian allies when his army was decimated by an epidemic.

Reconciliation and Revenge

In 1167 the rebellious Italian communes united against Frederick in the Lombard League, and Frederick retreated with difficulty to Germany, where he turned to increasing his territorial power and pacifying the constantly feuding German princes. In 1174 he returned to Italy. He was decisively defeated (1176) at Legnano by the Lombard League, partly because of lack of support from the German princes, notably Henry the Lion.

After his defeat Frederick became reconciled with the pope; he agreed to recognize Alexander III as pope and was restored (1177) to communion. He made peace with the Lombard towns (confirmed by the Peace of Constance in 1183) and arranged a truce with the pope's Sicilian allies. After his return to Germany, Frederick brought about the downfall (1180) of Henry the Lion, whose large duchies were partitioned; Frederick's divisions of the German territories were of lasting consequence. At the Diet of Mainz (1184) the emperor celebrated his own glory in fabulous pomp. He arranged the marriage (1186) of his son and successor, Henry (later Henry VI), to Constance, heiress presumptive of Sicily, thus insuring peace with Sicily.

Death and Legacy

In Mar., 1188, Frederick took the Cross, and he set out (1189) on the Third Crusade (see Crusades). He was drowned in Cilicia. Legend, however, has him asleep in the Kyffhäuser, waiting to restore the empire to its former greatness. Among the positive and lasting achievements of Frederick's reign are the foundations of new towns, the increase of trade, and the colonization and Christianization of Slavic lands in E Germany. In his administrative reforms the emperor was ably assisted by his chancellor, Rainald of Dassel.

Bibliography

See study by P. Munz (1969); Otto of Freising, The Deeds of Frederick Barbarossa (tr. 1953).


Frederick I

, king of Prussia
Frederick I, 1657–1713, first king of Prussia (1701–13), elector of Brandenburg (1688–1713) as Frederick III. He succeeded his father, Frederick William the Great Elector, in Brandenburg. Through a renewed alliance with Holy Roman Emperor Leopold I prior to the War of the Spanish Succession, Frederick obtained the emperor's approval for the elevation of Prussia to a kingdom. On Jan. 18, 1701, Frederick crowned himself at Königsberg. His extravagant expenses drained the finances of Prussia. Frederick was a patron of Leibniz. He was succeeded by his son, Frederick William I.

Frederick I

, elector of Brandenburg
Frederick I, 1371–1440, elector of Brandenburg (1415–40), first of the Hohenzollerns (see Hohenzollern, family) to rule Brandenburg. As Frederick VI, burgrave of Nuremburg, he served under King Sigismund of Hungary (later Holy Roman Emperor Sigismund) against the Ottomans in E Europe and took part in the battle of Nikopol (1396), in which the crusaders were defeated. As a reward for aiding Sigismund's election as emperor (1410), Sigismund granted (1411) Frederick a regency over Brandenburg and named him (1415) elector of Brandenburg; in 1417 he was formally invested with the electoral dignity. After subduing the recalcitrant nobles of Brandenburg, Frederick departed (1425) to command the imperial forces against the Hussites, but he later broke with Sigismund. His own ambition to be emperor was never fulfilled, but at his death the Hohenzollerns were well ensconced in Brandenburg.

Frederick I

, elector of Saxony
Frederick I or Frederick the Warlike, 1370–1428, elector of Saxony (1423–28). As margrave of Meissen he was involved in disputes with his brothers and his uncles over the division of his father's territory. He founded (1409) the university at Leipzig for German students who were driven from Prague. A neighbor of the Hussites, he was one of the first to take the field against them (1420–22) and was rewarded by Holy Roman Emperor Sigismund with electoral Saxony. In 1426 he was defeated by the Hussites at Aussig.
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Frederick I

1657--1713, first king of Prussia (1701--13); son of Frederick William
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005