Question: Who is the maternal grandfather of Amadeus Vii, Count Of Savoy?

Knowledge 1: Bonne of Bourbon
Bonne of Bourbon (1341 – 19 January 1402) was a daughter of Peter I, Duke of Bourbon, and Isabella of Valois, and hence a sister of Joanna of Bourbon.She served as regent of Savoy during the absence of her spouse from 1366 to 1367, in 1383, and during the minority of her grandson Count Amadeus VIII in 1391. [SEP] Knowledge 2: Amadeus VII, Count of Savoy
Amadeus VII (March 1360, Chambéry – 1 November 1391), known as the Red Count, was Count of Savoy from 1383 to 1391.Amadeus was the son of Amadeus VI, Count of Savoy and Bonne of Bourbon.Amadeus VII was known for his hospitality, for he would entertain people of all stations and never turned a person from his table without a meal.He married Bonne of Berry, daughter of John, Duke of Berry, who was the younger brother of Charles V of France.They had three children:
Upon his death at age 29 from tetanus, controversy arose because of his will.Amadeus VII left the important role of guardian of his son and heir, Amadeus VIII, to his own mother, a sister of the powerful Duke de Bourbon, instead of following the tradition of appointing the child's mother, who was a daughter of the equally powerful Duke de Berry.It took three months of negotiations to restore peace in the family.
Knowledge 1: Bonne of Bourbon
Bonne of Bourbon (1341 – 19 January 1402) was a daughter of Peter I, Duke of Bourbon, and Isabella of Valois, and hence a sister of Joanna of Bourbon.She served as regent of Savoy during the absence of her spouse from 1366 to 1367, in 1383, and during the minority of her grandson Count Amadeus VIII in 1391. [SEP] Knowledge 2: Amadeus VIII, Duke of Savoy
Amadeus VIII( 4 September 1383 – 7 January 1451) was a Savoyard nobleman, the son of Amadeus VII, Count of Savoy and Bonne of Berry.He was surnamed the Peaceful.After the death of his father in 1391, his mother acted as a regent, because of his youth.He was an antipope of the Catholic Church from 1439 to 1449 as Felix V, in opposition to Popes Eugene IV and Nicholas V.
Knowledge 1: Amadeus VII, Count of Savoy
Amadeus VII (March 1360, Chambéry – 1 November 1391), known as the Red Count, was Count of Savoy from 1383 to 1391.Amadeus was the son of Amadeus VI, Count of Savoy and Bonne of Bourbon.Amadeus VII was known for his hospitality, for he would entertain people of all stations and never turned a person from his table without a meal.He married Bonne of Berry, daughter of John, Duke of Berry, who was the younger brother of Charles V of France.They had three children:
Upon his death at age 29 from tetanus, controversy arose because of his will.Amadeus VII left the important role of guardian of his son and heir, Amadeus VIII, to his own mother, a sister of the powerful Duke de Bourbon, instead of following the tradition of appointing the child's mother, who was a daughter of the equally powerful Duke de Berry.It took three months of negotiations to restore peace in the family. [SEP] Knowledge 2: Amadeus VIII, Duke of Savoy
Amadeus VIII( 4 September 1383 – 7 January 1451) was a Savoyard nobleman, the son of Amadeus VII, Count of Savoy and Bonne of Berry.He was surnamed the Peaceful.After the death of his father in 1391, his mother acted as a regent, because of his youth.He was an antipope of the Catholic Church from 1439 to 1449 as Felix V, in opposition to Popes Eugene IV and Nicholas V.

Answer: Peter I