Louis Joseph, Duke of Guise
Louis Joseph de Lorraine" Duke of Guise" and Duke of Angoulême,( 7 August 1650 – 30 July 1671) was the only son of Louis, Duke of Joyeuse and Marie Françoise de Valois, the only daughter of Louis- Emmanuel d' Angoulême, Count of Alès, Governor of Provence and son of Charles de Valois Duke of Angoulême, a bastard of Charles IX of France.
Philip, Count of Vertus
Philip of Orléans, Count of Vertus( 21/24 July 1396 – 1 September 1420), was the second son of Louis I, Duke of Orléans, and Valentina Visconti, and a grandson of Charles V of France.
His older brother was the noted poet Charles, Duke of Orléans and his younger brother was John, Count of Angoulême.
Claude of France
Claude of France (13 October 1499 – 20 July 1524) was a queen consort of France by marriage to Francis I.
She was also ruling Duchess of Brittany from 1514.
She was a daughter of the French king Louis XII of France and Anne of Brittany.
Prince Henri of Orléans
Prince Henri of Orléans( 16 October 1867 – 9 August 1901) was the son of Prince Robert, Duke of Chartres, and Princess Françoise of Orléans.
Valentina Visconti, Duchess of Orléans
Valentina Visconti (1371 – 4 December 1408) was a Sovereign Countess of Vertus, and Duchess consort of Orléans as the wife of Louis de Valois, Duke of Orléans, the younger brother of King Charles VI of France.
Philip, Duke of Orléans
Philip of Orléans( 1 July 1336 at Vincennes – 1 September 1375 at Orléans) was a Duke of Orléans, Touraine, and Count of Valois, the fifth son of King Philip VI of France and his wife Joan the Lame.
His father named him Duke of Orléans, a newly created duchy, in 1344.
Charles II de Valois, Duke of Orléans
Charles II of Orléans (22 January 1522 – 9 September 1545) was the third son of Francis I and Claude of France.
Marie de Valois
Marie Marguerite de Valois (1444–1473) was the natural daughter of King Charles VII of France and his mistress Agnès Sorel.
She had two sisters, Charlotte de Valois (1446–1477) and Jeanne de Valois (born 1448).
Marie married Olivier de Coétivy, Count of Taillebourg.
Catherine of France, Countess of Montpensier
Catherine of France (4 February 1378 – November 1388) was the youngest child of Charles V of France and Joanna of Bourbon, who were cousins.
She was a sibling of Charles VI of France and Louis of Valois, Duke of Orléans.
John, Count of Angoulême
John of Orléans, Count of Angoulême and of Périgord( 26 June 1399 – 30 April 1467), was a younger son of Louis I, Duke of Orléans, and Valentina Visconti, and a grandson of Charles V of France.
He was the younger brother of the noted poet, Charles, Duke of Orléans, and grandfather of Francis I of France.
John was taken hostage by the English in 1412, and not released until 1444.
In 1415 he was joined by his older brother Charles, with whom he shared an interest in literature.
He had to sell part of his estates to pay for his ransom, but still collected many books.
After that, he fought under the orders of his illegitimate half- brother, Dunois, driving the English out of Guyenne in 1451.
On 31 August 1449, he married Marguerite de Rohan, daughter of Alain IX of Rohan and Marguerite of Brittany.
They had three children:
He also had an illegitimate son, Jean de Valois, bastard of Angoulême, who was legitimised in 1458.
" Good Count John" died in 1467.
He is buried in the Cathedral of Angoulême.

Question: Who is Charles Ii De Valois, Duke Of Orléans's maternal grandfather?
Answer: Louis XII of France