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Frederick I Barbarossa was elected King of Germany at Frankfurt on 4 March 1152 and crowned in Aachen on 9 March, crowned King of Italy in Pavia in 1154, and finally crowned Holy Roman Emperor by Pope Adrian IV on 18 June 1155. He was crown... |
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Henry the Lion was a member of the Welf dynasty and Duke of Saxony, as Henry III, from 1142, and Duke of Bavaria, as Henry XII, from 1156, which duchies he held until 1180. He was one of the most powerful German princes of his time, until t... |
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Otto IV of Brunswick was one of two rival kings of the Holy Roman Empire from 1198 on, sole king from 1208 on, and emperor from 1209 on. The only king of the Welf dynasty, he incurred the wrath of Pope Innocent III and was excommunicated in... |
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