Gaucher IV de Châtillon, in German Walter IV, (died c. 1261/65) was Lord of Châtillon, Crécy, Crèvecœur and Troissy from the House of Châtillon.
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Biography
He was the third-born son of Hugh I of Châtillon (d. 1248), Count of Saint-Pol and Lord of Châtillon, and Mary, Countess of Blois. His older brothers were Count John I of Blois (d. 1279) and Count Guy III, Count of Saint-Pol (d. 1289). As a later-born son, he received some subordinate castle and manorial dominions in the inheritance decreed by his father in 1246, including the family seat in Châtillon-sur-Marne. He is last documented in December 1260, when he and his wife made a donation to the nuns of Notre-Dame du Pont. His wife confirmed a donation made by him (Gavchier de Chastillon Sires de Crecy) to the same religious institution in February 1265. Apparently, Gaucher IV had already died by this time.
Family
Gaucher IV was married by 1258 at the latest to Isabelle von Lezinnes (d. after 1265) from the Villehardouin family, a great-granddaughter of the chronicler Geoffrey of Villehardouin. Their children were:
Gaucher V of Châtillon (d. 1329), Lord of Châtillon etc., from 1303 Count of Porcéan, Constable of France.
Guido of Châtillon (d. c. 1281/86).
Mary of Châtillon (d. after 1296); married to Milon IX de Noyers (d. 1291), Lord of Noyers.