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Author: WikiMatrix
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English[en]
In 1259, the Principality's ruler William II Villehardouin lost the Battle of Pelagonia against the Byzantine Emperor Michael VIII Palaeologus.
Swedish[sv]
1259 förlorade furstendömets härskare, Guillaume II de Villehardouin, slaget vid Pelagonia mot den bysantinska kejsaren Mikael VIII Palaiologos.