Eudes III, Duke of Burgundy

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Eudes III of Burgundy (1166 – July 6, 1218) was duke of Burgundy between 1192 and 1218. Eudes was the eldest son of duke Hugh III and his first wife Alice, daughter of Matthias I, Duke of Lorraine. He was married twice, first to Teresa, princess of Portugal, daughter of king Afonso I of Portugal, then to Alice of Vergy.

Eudes did not follow his father's aggressive policies towards France and proved a worthy ally of king Philip II of France on his wars against John Lackland and the Holy Roman Emperor Otto IV of Germany. He fought bravely against the latest in the battle of Bouvines, where he lost, according to contemporary chroniclers, two horses beneath him. Eudes was also an important figure in the Crusade against the Cathars. When Philip II refused to get involved, the Duke of Burgundy stepped forward with the support of the local bishops and his vassals and organized the campaign of 1209 against the Cathar strongholds.