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He succeeded his father in 1105. In 1121 he married Judith of Bavaria , 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.
1090
| 1090 • Song Dynasty Chinese author Qin Guan writes the Can Shu (Book of Sericulture), which describes a silk-reeling machine that has the world's oldest known mechanical belt drive. |
1132
Age: 42y
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marriageAgnes of Saarbrücken 1 Source ⇓ |
| 1132 • Barnwell Castle is erected in Northamptonshire, England. |
about
Age: 45y
1135
Age: 45y
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birth of childConrad of Hohenstaufen 3 Sources ⇓ |
| 1135 • A fire in London seriously damages St Paul's Cathedral and London Bridge on Pentecost (Sunday, May 26). |
1147
Apr 6
Age: 57y
| 1147 • Hildegard of Bingen founds the convent of Rupertsberg near Bingen. |