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Frederick the One-Eyed was the second Hohenstaufen duke of Swabia. He succeeded his father in 1105. His wife Judith was a member of the powerful House of Guelph. On the death of Emperor Henry V, his uncle, Frederick stood for election as King of the Romans with the support of his younger brother Conrad, duke of Franconia and several houses. However, he lost this election of 1125 to Lothar III, crowned Emperor later in 1133.
A conflict erupted between Frederick and his supporters, and Lothar. Encouraged by Albert, Archbishop of Mainz, who loathed the supporters of the late Emperor Henry V, Lothar besieged Nuremberg in 1127. Frederick relieved the siege of Nuremberg in 1127 and occupied Speyer in 1128. The attempt of Henry the Proud, duke of Bavaria, to capture Frederick during negotiations failed (1129). However, afterwards supporters of Lothar won a number of victories both in Germany and in Italy. Speyer (1129), Nuremberg (1130) and Ulm (1134) were captured and in October 1134 Frederick submitted to the emperor. In 1135 both Frederick and Conrad were finally reconciled with Lothar. After Lothar's death (1137) and election of Conrad as King of the Romans (1138) Frederick supported his brother in the struggle with Guelphs. According to Otto of Freising, Frederick was "so faithful a knight to his sovereign and so helpful a friend to his uncle that by valor he supported the tottering honor of the realm, fighting manfully against its foes..."
Frederick's second wife, Agnes, was the niece of his old enemy Albert of Mainz.
|Offspring of Friedrich II von Schwaben and Judith von Bayern (c1103-1131)|
|Friedrich I Barbarossa of the Holy Roman Empire (1122-1190)||<year not a number> Ravensburg||<year not a number> Seleucia|| Adela von Vohburg (1128-1187)|
Béatrice I de Bourgogne (1145-1184)
|Bertha von Schwaben (c1124-c1194)||<year not a number>||<year not a number>|| Mathieu I de Lorraine (c1119-1176)|
|Offspring of Friedrich II von Schwaben and Agnes von Saarbrücken (1115-aft1147)|
|Jutta von Schwaben (1133-1191)||<year not a number>||<year not a number>|| Ludwig II. von Thüringen (1128-1172)|
|Konrad der Staufer (1136-1195)||<year not a number>||<year not a number>|| ? von Sponheim (?-c1159)|
Irmgard von Henneberg (c1146-1197)
|Liutgard von Schwaben (?-aft1155)|
Namesakes of Friedrich II von Schwaben (1090-1147)
|This page uses content from the English language Wikipedia. The original content was at Frederick II, Duke of Swabia. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.|