Peter II, Duke of Bourbon
Peter II, Duke of Bourbon (1 December 1438 – 10 October 1503 in Moulins), was the son of Charles I, Duke of Bourbon, and Agnes of Burgundy, and a member of the House of Bourbon.
He and his wife Anne of France ruled as regents during the minority of Charles VIII of France.
Beatrice of Bourbon, Queen of Bohemia
Beatrice of Bourbon( 1320 – 23 December 1383) was a French noblewoman.
A member of the House of Bourbon, she was by marriage Queen of Bohemia and Countess of Luxembourg.
She was the youngest daughter of Louis I, Duke of Bourbon, and Mary of Avesnes.
Hannah Arnold
Hannah Arnold, also known as Hannah Waterman King, was the grandmother of Benedict Arnolds children.
Blanche of Bourbon
Blanche of Bourbon( 1339 – 1361) was Queen of Castile as the wife of King Peter.
She was one of the daughters of Peter I, Duke of Bourbon and Isabella of Valois.
John II, Duke of Bourbon
Jean( John) de Bourbon, Duke of Bourbon( 1426 – 1 April 1488, Château de Moulins), sometimes referred to as John the Good and The Scourge of the English, was a son of Charles I of Bourbon and Agnes of Burgundy.
He was Duke of Bourbon and Auvergne from 1456 to his death.
Hubba bint Hulail
Hubba bint Hulail was the grandmother of Hashim ibn' Abd Manaf, thus the great- great- great- grandmother of the Islamic" Nabī"( Prophet) Muhammad ibn Abdullah.
Agnes of Burgundy, Duchess of Bourbon
Agnes of Burgundy (1407 – 1 December 1476), duchess of Bourbon (Bourbonnais) and Auvergne, countess of Clermont, was the daughter of John the Fearless (1371–1419) and Margaret of Bavaria.
Her maternal grandparents were Albert I, Duke of Bavaria and Margaret of Brieg.
Her paternal grandparents were Philip the Bold and Margaret III, Countess of Flanders.
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.
Maria of Brabant, Duchess of Bavaria
Maria of Brabant( 1226–1256) was a daughter of Henry II, Duke of Brabant, and Maria of Swabia.
She married Louis II, Duke of Bavaria, being the first of three wives.
Charles II, Duke of Bourbon
Charles II, Duke of Bourbon( Château de Moulins, 1434 – September 13, 1488, Lyon), was Archbishop of Lyon from an early age and a French diplomat under the rule of Louis XI of France.
He had a 2- week tenure as Duke of Bourbon in 1488, being ousted afterward by his younger brother and successor, Peter II, Duke of Bourbon.

Question: Who is the maternal grandmother of Peter Ii, Duke Of Bourbon?
Answer: Margaret of Bavaria