Question: When did Robert, Count Of Burgundy's mother die?

Knowledge 1: Robert, Count of Burgundy
Robert, Count of Burgundy (1300–1315) was the son of Otto IV, Count of Burgundy and Mahaut, Countess of Artois.He was count of Burgundy between 1302 and 1315.He died in 1315, and was succeeded by his sister, Joan II, and brother-in-law, Philip II, later queen and king of France. [SEP] Knowledge 2: Mahaut, Countess of Artois
Mahaut of Artois (1268 27 November 1329), also known as Mathilda, ruled as countess of Artois from 1302 to 1329.She was furthermore regent of the County of Burgundy from 1303 to 1315 during the minority of her son, Robert.
Knowledge 1: Robert, Count of Burgundy
Robert, Count of Burgundy (1300–1315) was the son of Otto IV, Count of Burgundy and Mahaut, Countess of Artois.He was count of Burgundy between 1302 and 1315.He died in 1315, and was succeeded by his sister, Joan II, and brother-in-law, Philip II, later queen and king of France. [SEP] Knowledge 2: Henry, son of Robert I of Burgundy
Henry of Burgundy (c. 1035 – January 27, 1070/1074), called the Gallant ("le Damoiseau"), was the eldest surviving son and heir of Robert I, Duke of Burgundy, second son of Robert II of France, and his wife, Helie of Semur, granddaughter of Henry I, Duke of Burgundy.Little is known about his life.He died shortly before his father and was never duke himself.The name of Henry's wife is not known, though both Sibylla and Clémence have been suggested.The first of these derives from an undated obituary from Besançon, Sainte-Etienne, naming "Sibilla, mater ducus Burgundie" (Sibylla, mother of the Duke of Burgundy), it being reasoned that since she is not called duchess, she must have been married to the sole father of a duke who was not a duke himself, Henry.However, it has been argued by Jean Richard that this is a reference to Sibylla of Burgundy, Duchess of Burgundy, mother of the then-ruling duke, Hugh II.Richard proposed based on the name's repeated use among the descendants of her son Odo I, Duke of Burgundy that she may have been named Clémence, although Odo's wife had a sister, Clementia of Burgundy, who could have been the inspiration for its use among their descendants.Based on the use of the byname "Borel" by Odo I, genealogist Szabolcs de Vajay proposed that his mother was the daughter of Berenguer Ramon I, Count of Barcelona and his third wife, Guisle of Lluca, and hence granddaughter of Ramon Borrell, Count of Barcelona, although there is no documentary evidence that this was the case.Henry's wife died on or after July 6, 1074.
Knowledge 1: Mahaut, Countess of Artois
Mahaut of Artois (1268 27 November 1329), also known as Mathilda, ruled as countess of Artois from 1302 to 1329.She was furthermore regent of the County of Burgundy from 1303 to 1315 during the minority of her son, Robert. [SEP] Knowledge 2: Henry, son of Robert I of Burgundy
Henry of Burgundy (c. 1035 – January 27, 1070/1074), called the Gallant ("le Damoiseau"), was the eldest surviving son and heir of Robert I, Duke of Burgundy, second son of Robert II of France, and his wife, Helie of Semur, granddaughter of Henry I, Duke of Burgundy.Little is known about his life.He died shortly before his father and was never duke himself.The name of Henry's wife is not known, though both Sibylla and Clémence have been suggested.The first of these derives from an undated obituary from Besançon, Sainte-Etienne, naming "Sibilla, mater ducus Burgundie" (Sibylla, mother of the Duke of Burgundy), it being reasoned that since she is not called duchess, she must have been married to the sole father of a duke who was not a duke himself, Henry.However, it has been argued by Jean Richard that this is a reference to Sibylla of Burgundy, Duchess of Burgundy, mother of the then-ruling duke, Hugh II.Richard proposed based on the name's repeated use among the descendants of her son Odo I, Duke of Burgundy that she may have been named Clémence, although Odo's wife had a sister, Clementia of Burgundy, who could have been the inspiration for its use among their descendants.Based on the use of the byname "Borel" by Odo I, genealogist Szabolcs de Vajay proposed that his mother was the daughter of Berenguer Ramon I, Count of Barcelona and his third wife, Guisle of Lluca, and hence granddaughter of Ramon Borrell, Count of Barcelona, although there is no documentary evidence that this was the case.Henry's wife died on or after July 6, 1074.

Answer: 27 November 1329