Question: Who is Adelaide Of Burgundy, Duchess Of Brabant's paternal grandfather?

Knowledge 1: Adelaide of Burgundy, Duchess of Brabant
Adelaide of Burgundy (c. 1233 – 23 October 1273) was a daughter of Hugh IV, Duke of Burgundy by his first wife Yolande of Dreux.Alternatively, she was known as "Alice" or "Aledidis".She was Duchess of Brabant as a result of her marriage to Henry III, Duke of Brabant in 1251 and would later act as regent of the Duchy following the death of her husband a decade later. [SEP] Knowledge 2: Hugh IV, Duke of Burgundy
Hugh IV of Burgundy (9 March 1213 – 27 or 30 October 1272) was Duke of Burgundy between 1218 and 1272.Hugh was the son of Odo III, Duke of Burgundy and Alice de Vergy.
Knowledge 1: Adelaide of Burgundy, Duchess of Brabant
Adelaide of Burgundy (c. 1233 – 23 October 1273) was a daughter of Hugh IV, Duke of Burgundy by his first wife Yolande of Dreux.Alternatively, she was known as "Alice" or "Aledidis".She was Duchess of Brabant as a result of her marriage to Henry III, Duke of Brabant in 1251 and would later act as regent of the Duchy following the death of her husband a decade later. [SEP] Knowledge 2: Hugh the Black
Hugh the Black( died 952) was Duke of Burgundy from 923 until his death in 952.He was a Bosonid through his father, who was the younger brother of Boso of Provence.Hugh was the son of Richard of Autun, Duke of Burgundy, and Adelaide of Auxerre.He succeeded his older brother Rudolph as Duke of Burgundy, when Rudolph was elected King of West Francia, as Raoul, in 923.Following Raoul's death in 936, Hugh may have had aspirations to follow his brother onto the throne and refused to recognize Louis IV as king of West Francia.As a result, Louis sent Hugh the Great who captured Auxerre and Sens.The Duchy of Burgundy was divided between Hugh the Great and Hugh the Black.It is unknown whether Hugh married.He probably died without living offspring, as he was succeeded as Duke of Burgundy by Gilbert of Chalon, who held the title of Duke of Burgundy" jure uxoris", his wife Ermengard being the daughter of Richard of Autun, and sister of Hugh.
Knowledge 1: Hugh the Black
Hugh the Black( died 952) was Duke of Burgundy from 923 until his death in 952.He was a Bosonid through his father, who was the younger brother of Boso of Provence.Hugh was the son of Richard of Autun, Duke of Burgundy, and Adelaide of Auxerre.He succeeded his older brother Rudolph as Duke of Burgundy, when Rudolph was elected King of West Francia, as Raoul, in 923.Following Raoul's death in 936, Hugh may have had aspirations to follow his brother onto the throne and refused to recognize Louis IV as king of West Francia.As a result, Louis sent Hugh the Great who captured Auxerre and Sens.The Duchy of Burgundy was divided between Hugh the Great and Hugh the Black.It is unknown whether Hugh married.He probably died without living offspring, as he was succeeded as Duke of Burgundy by Gilbert of Chalon, who held the title of Duke of Burgundy" jure uxoris", his wife Ermengard being the daughter of Richard of Autun, and sister of Hugh. [SEP] Knowledge 2: Rudolph of France
Rudolph or Rudolf( c. 890 – 14/15 January 936) was the elected King of France from 923 until his death in 936.Prior to his election as king, he was Duke of Burgundy and Count of Troyes from 921.He was the son of Richard, Duke of Burgundy, and Adelaide of Auxerre, and inherited the Duchy of Burgundy from his father.He married Emma of France, daughter of king Robert I of France.He is frequently confused with his uncle Rudolph I of Burgundy.Rudolph was elected king of West Francia in 923 by an assembly of Frankish nobles, to succeed his father- in- law Robert I who was killed at the Battle of Soissons against the deposed king Charles the Simple.He was crowned by Walter, Archbishop of Sens at St. Médard in Soissons on Sunday, 13 July 923.On assuming the crown he passed the Duchy of Burgundy to his younger brother Hugh the Black.

Answer: Odo III, Duke of Burgundy