William III of Mâcon

William III of Mâcon (1088–1156), also known as William IV of Burgundy, was count of Mâcon (1102–1156), count of Auxonne (1127–1156), count of Vienne (1148–1156) and regent of the county of Burgundy (1148–1156). He was a younger son of Stephen I, Count of Burgundy, and of Beatrice of Lorraine. After the death of his brother, Renaud III, he took control of the county of Burgundy in the name of his niece Beatrice. He effectively imprisoned Beatrice and was recognized as count by the emperor Frederick Barbarossa by 1152. He died in 1156 while on Crusade in the Holy Land, and Frederick married Beatrice and took over the county.[1]

William III
Count of Mâcon
Blason Mâcon.svg
Coats-of-arms of Mâcon
Noble familyHouse of Ivrea
Spouse(s)Adelaide/Alice of Traves
IssueStephen II of Auxonne
FatherStephen I, Count of Burgundy
MotherBeatrice of Lorraine

William married Adelaide-Pontia (Poncette), heiress of Lord Theobald of Traves, and had the following issue:[1]


  1. ^ a b c Constance Brittain Bouchard, Sword, Miter, and Cloister: Nobility and the Church in Burgundy, 980–1198 (Ithaca and London: Cornell University Press, 1987), pp. 277–78.