Category:Conrad II, Duke of Swabia - Wikimedia Commons
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Frederick II, Duke of Swabia - Wikipedia
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Frederick II Duke of Swabia Stock Photo: 344002257 - Alamy
Frederick II Duke of Swabia Stock Photo: 344002257 - Alamy
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:max_bytes(150000):strip_icc()/frederick-barbarossa-large-57c4b9bc5f9b5855e5f68334.jpg "Biography of Frederick I Barbarossa, Holy Roman Emperor")
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Jesi square Frederick II Duke of Swabia | In this square was… | Flickr
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Frederick II Duke of Swabia Stock Photo: 344002257 - Alamy
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Barbarossa in Italy | History Today
