Question: Who is the grandmother of Philippe, Duke of Orléans?

Knowledge 1: Philippe I, Duke of Orléans
Philippe, Duke of Orléans (21 September 1640 – 9 June 1701) was the younger son of Louis XIII of France and his wife, Anne of Austria. His older brother was the famous "Sun King", Louis XIV. Styled Duke of Anjou from birth, Philippe became Duke of Orléans upon the death of his uncle Gaston in 1660. In 1661, Philippe also received the dukedoms of Valois and Chartres. Following Philippe's victory in battle in 1671, Louis XIV added the dukedom of Nemours, the marquisates of Coucy and Folembray, and the countships of Dourdan and Romorantin. During the reign of his brother he was known simply as "Monsieur", the traditional style at the court of France for the younger brother of the king. [SEP] Knowledge 2: Leonora Dori
Leonora Dori Galigaï (19 May 1568 – 8 July 1617) was a French courtier of Italian origin, an influential favourite of the French regent Marie de' Medici, mother of King Louis XIII of France. Galigaï was married to Concino Concini, the later marquis and then marshal d'Ancre, during Marie's reign as Queen Mother and Regent of France.
Knowledge 1: Philippe I, Duke of Orléans
Philippe, Duke of Orléans (21 September 1640 – 9 June 1701) was the younger son of Louis XIII of France and his wife, Anne of Austria. His older brother was the famous "Sun King", Louis XIV. Styled Duke of Anjou from birth, Philippe became Duke of Orléans upon the death of his uncle Gaston in 1660. In 1661, Philippe also received the dukedoms of Valois and Chartres. Following Philippe's victory in battle in 1671, Louis XIV added the dukedom of Nemours, the marquisates of Coucy and Folembray, and the countships of Dourdan and Romorantin. During the reign of his brother he was known simply as "Monsieur", the traditional style at the court of France for the younger brother of the king. [SEP] Knowledge 2: Marie Anne de Bourbon
Marie Anne de Bourbon, "Légitimée de France" (2 October 1666 – 3 May 1739) was the eldest legitimised daughter ("fille légitimée de France") of King Louis XIV of France and his mistress Louise de La Vallière. At the age of thirteen, she was married to Louis Armand de Bourbon, Prince of Conti and as such was the Princess of Conti by marriage. Her father's favourite daughter, Marie Anne was widowed in 1685 aged 19. She never married again and had no children. Following her mother's retirement to a convent, Marie Anne continued to reside at her father's court and was later her mother's heiress. She later became the Duchess of La Vallière in her own right.
Knowledge 1: Constance of Burgundy
Constance of Burgundy (8 May 1046 – 1093) was the daughter of Duke Robert I of Burgundy and Helie de Semur-en-Brionnais. She was Queen consort of Castile and León by her marriage to Alfonso VI of León and Castile. She was the granddaughter of King Robert II of France, the second monarch of the French Capetian dynasty. She was the mother of Urraca of León, who succeeded her father in both Castile and León. [SEP] Knowledge 2: Childebrand I
Childebrand I (678, Heristal - 751) was a Frankish duke ("dux"), son of Pepin of Heristal and Alpaida, brother of Charles Martel. He married Emma of Austrasia and was given Burgundy by his father. He distinguished himself in the expulsion of the Saracens from France.

Answer: Marie de' Medici