William I (1020 – 12 November 1087), called the Great (le Grand or Tête Hardie, "the Stubborn"), was Count of Burgundy from 1057 to 1087 and Mâcon from 1078 to 1087. He was a son of Renaud I and Alice of Normandy, daughter of Richard II, Duke of Normandy. William was the father of several notable children, including Pope Callixtus II.
In 1057, he succeeded his father and reigned over a territory larger than that of the Franche-Comté itself. In 1087, he died in Besançon, Prince-Archbishopric of Besançon, Holy Roman Empire -- an independent city within the County of Burgundy. He was buried in Besançon's Cathedral of St John.
William married a woman named Stephanie (a.k.a. Etiennette).
Children of Stephanie (order uncertain):
Renaud II, William's successor, died on First Crusade
Stephen I, successor to Renaud II, Stephen died on the Crusade of 1101
Raymond of Burgundy who married Urraca of León and Castile and thus was given the government of Galicia (Spain) (died 1107)
Sybilla (or Maud), married (1080) Eudes I of Burgundy
Gisela of Burgundy, married (1090) Humbert II of Savoy and then Renier I of Montferrat
Clementia married Robert II, Count of Flanders and was Regent, during his absence. She married secondly Godfrey I, Count of Leuven and was possibly the mother of Joscelin of Louvain.
Guy of Vienne, elected pope, in 1119 at the Abbey of Cluny, as Calixtus II
Hugh III, Archbishop of Besançon
Stephanie married Lambert, Prince de Royans (died 1119)
Ermentrude, married (1065) Theodoric I
(perhaps) Bertha wife of Alphonso VI of Castile
and maybe another daughter