_Theobald III - Count of Brie _____________ _Theobald IV - King of Navarre _| | |_Blanche - Princess of Navarre ____________ _Henry I - King of Navarre _| | | ___________________________________________ | |_Marguerite de Bourbon _________| | |___________________________________________ | |--Joan of Champagne - Princess of Navarre | | _Louis VIII "The Lion" - King of France ___ | _Robert I - Prince of France ___| | | |_Blanche of Castile - Princess of Castile _ |_Blanche of Artois _________| | _Henry II - Duke of Brabant _______________ |_Matilda of Brabant ____________| |_Matilda of Alsace and Flanders ___________