Isabelle de Champagne Peerage person ID=407882 (b. 1130) Parents Theobald II of Champagne Matilda of Carinthia Children Mathilde Gouët, Dame de Montmirail, d'Allueys, de Brou, d'Authou et de Bazoches-du-Perche Siblings Theobald V, Count of Blois Guillaume aux Blanches Mains Agnes of Blois Adèle of Champagne Henry I, Count of Champagne Stephen I of Sancerre Marie of Champagne Margaret de Champagne Matilda of Champagne Partners Roger III, Duke of Apulia William IV Gouet