Er ist verheiratet mit Beatrice de Montfort l'Amaury.
Sie haben geheiratet rund 1260.
Echtgeno(o)t(e): Robert de Dreux, Count of Dreux
Kind(er):
Robert IV of DreuxRobert fought with Philip III of France in 1272 in his expedition to the Languedoc and was present at the capture of Foix.ghter of Jean I de Montfort and Jeanne, Dame de Chateaudun, and granddaughter of Amaury de Montfort. Their son John succeeded his father while their eldest daughter Yolande (1263-1322) married Alexander III, King of Scots, and later Arthur II, Duke of Brittany.ort (1263- 1323), married firstly on 15 October 1285 King Alexander III of Scotland, and secondly in 1292 Arthur II Duke of Brittany. Had seven children by her second husband- 1309), married firstly Jeanne de Beaujeu, Dame de Montpensier (died 1308), by whom he had four sons and one daughter, in 1308 he married secondly Perrenelle de Sully, by whom he had one daughter Jeanne II, Countess of Dreux (1309- c.1355)rt de Dreux, seigneur de Cateau-du-Loire
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