Guillaume de Donjeon (c. 1140 – 10 January 1209) was a French Roman Catholic prelate who served as the Archbishop of Bourges from 1200 until his death.

[4] He was content with this decision and lived amongst them for a period of time while practicing great austerities but in 1167 once he saw the dissensions occurring amongst members of the order, decided to enter the Cistercians.

[3] He fostered a deep and special devotion to the Blessed Sacrament and loved to spend much of his time at the foot of the altar contemplating it.

[2] The bishop proved to be instrumental in the ongoing construction of the Gothic Cathedral of Saint Stephen which his predecessor had commenced earlier in 1195.

[3] He once incurred wrath from King Philip II when the bishop enacted an interdict from Innocent III against him for having divorced his wife.

[3] His canonization was celebrated under Pope Honorius III on 17 May 1218; the late bishop is considered to be the patron saint for the University of Paris.