/Landeric III
        /Renaud I
       |    \Mathilda of Burgundy
    /William I
   |   |    /Robert II of France
   |    \Adele de France
   |        \Constance of Toulouse
William de Nevers
   |        /Milo IV of Tonnerre
   |    /Renaud of Tonnerre
   |   |    \Ermensinde de Bar
    \Ermengarde of Tonnerre
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