Question: What is the date of death of William I, Count Of Burgundy's mother?

Knowledge 1: William I, Count of Burgundy
William I (1020 – 12 November 1087), called the Great ("le Grand" or "Tête Hardiethe 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 (a.k.a. Etiennette).Children of Stephanie (order uncertain): [SEP] Knowledge 2: Alice of Normandy
Alice or Adeliza, Adelaide or Aelis(c. 1002 – 1038) was a countess consort of Burgundy, the daughter of Richard II, Duke of Normandy (972–1026) and Judith of Brittany.She married Reginald I, Count of Burgundy and had the following children:
Knowledge 1: William I, Count of Burgundy
William I (1020 – 12 November 1087), called the Great ("le Grand" or "Tête Hardiethe 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 (a.k.a. Etiennette).Children of Stephanie (order uncertain): [SEP] Knowledge 2: Reginald II, Count of Burgundy
Reginald II, Count Palatine of Burgundy and Count of Mâcon, Vienne and Oltingen, was born in 1061; he was the eldest son of William I of Burgundy and brother to Stephen I of Burgundy, his successor, as well as to Pope Callixtus II.He succeeded to the County, aged 25, on his father's death in 1087, also gaining the title of Count of Mâcon.From his wife, the Countess Regina of Oltingen, he inherited—among others — the title of Count of Oltingen, they were the parents of William II of Burgundy.The place and date of his death is uncertain, as is his potential participation in the First Crusade.His death is dated either to 1095, prior to the First Crusade or to circa 1102 in the Holy Land along with his brothers Stephen I and Hugh, archbishop of Besançon.
Knowledge 1: Alice of Normandy
Alice or Adeliza, Adelaide or Aelis(c. 1002 – 1038) was a countess consort of Burgundy, the daughter of Richard II, Duke of Normandy (972–1026) and Judith of Brittany.She married Reginald I, Count of Burgundy and had the following children: [SEP] Knowledge 2: Reginald II, Count of Burgundy
Reginald II, Count Palatine of Burgundy and Count of Mâcon, Vienne and Oltingen, was born in 1061; he was the eldest son of William I of Burgundy and brother to Stephen I of Burgundy, his successor, as well as to Pope Callixtus II.He succeeded to the County, aged 25, on his father's death in 1087, also gaining the title of Count of Mâcon.From his wife, the Countess Regina of Oltingen, he inherited—among others — the title of Count of Oltingen, they were the parents of William II of Burgundy.The place and date of his death is uncertain, as is his potential participation in the First Crusade.His death is dated either to 1095, prior to the First Crusade or to circa 1102 in the Holy Land along with his brothers Stephen I and Hugh, archbishop of Besançon.

Answer: 1038