Wie trouwde met Isabelle de Dreux, Dame de Nesles-en-Tardenois?

Gaucher V de Châtillon (c. 1249 in Châtillon-sur-Marne – 1329), Lord of Châtillon, Count of Porcien, was constable of Champagne in 1284 and then Constable of France (1302–1329) during the reigns of five different kings. He was also tutor to the future Louis X of France and his primary minister.