Gaucher de Châtillon-Nevers

Gaucher de Châtillon, called Gaucher de Nevers (c. 1221–1250), was the only son of Guy II, Count of Saint-Pol, and Agnès de Donzy, heiress of Nevers. His mother died in 1225 and his father was killed at the siege of Avignon the following year; he and his sister Yolande were raised by their grandmother.

In 1236 he married Jeanne, daughter of Count Philip Hurepel of Clermont. He fought the English in La Marche in 1242 and joined Louis IX's Seventh Crusade in 1248.

He was killed at Fariskur in Egypt after Mansurah, defending the approach to the village where the sick king had stopped. His sister inherited his counties.