question: Who is Margaret Of Valois, Countess Of Blois's maternal grandfather?
context: [["Theobald III, Count of Blois", ["Theobald III of Blois( French:\" Thibaut\")( 1012\u20131089) was count of Blois, Meaux and Troyes.", "He was son of Odo II, Count of Blois and Ermengarde of Auvergne."]], ["Alix of France", ["Alix of France( July \u2013 August 1150 \u2013 1197/1198) was countess consort of Blois by marriage to Theobald V, Count of Blois.", "She was regent of Blois during the absence of her spouse in 1190- 1191, and regent during the minority of Louis I, Count of Blois from 1191 until 1197."]], ["Mary, Countess of Blois", ["Mary, Countess of Blois, also known as\" Marie of Avesnes\",( 1200 \u2013 1241) was countess of Blois from 1230 to 1241.", "She was the daughter of Walter of Avesnes and Margaret of Blois.", "In 1226, Mary married Hugh I of Ch\u00e2tillon, a count from Ch\u00e2tillon- sur- Marne, son of Gaucher III of Ch\u00e2tillon and Elisabeth of Saint Pol.", "They had five children:", "Her eldest son John, succeeded her in Blois."]], ["Margaret of Valois, Countess of Blois", ["Margaret of Valois (1295\u20131342) was a French noblewoman.", "She was a daughter of Charles, Count of Valois, and his first wife, Margaret, Countess of Anjou.", "She was also a sister of King Philip VI of France.", "In 1310, she married Guy I, Count of Blois.", "They had three children together:"]], ["Guy I, Count of Blois", ["Guy I of Ch\u00e2tillon, Count of Blois( died 12 August 1342), son of Hugh II of Ch\u00e2tillon and Beatrix of Dampierre, was Count of Blois and Lord of Avesnes 1307 \u2013 1342.", "In 1310, he married Margaret of Valois, daughter of Charles of Valois and sister of Philip VI of France.", "They had three children:", "He took part in the expedition of Louis X of France against his uncle Robert III of Flanders in 1315, and in the early stages of the Hundred Years' War."]], ["Marie of Valois, Duchess of Calabria", ["Marie of Valois( 1309 \u2013 23 October 1331), was the eldest daughter of Charles of Valois by his third wife Mahaut of Ch\u00e2tillon.", "She was a member of the House of Valois.", "One of her five children was Queen Joanna I of Naples."]], ["Margaret, Countess of Anjou", ["Margaret, Countess of Anjou (1272 \u2013 31 December 1299) was Countess of Anjou and Maine in her own right and Countess of Valois, Alen\u00e7on, Chartres and Perche by marriage.", "Margaret's father was King Charles II of Naples, whilst her husband was Charles of Valois, and her older brother was Saint Louis of Toulouse; her nephew was Charles I of Hungary."]], ["Louis II, Count of Blois", ["Louis II of Ch\u00e2tillon( d. 26 August 1346, battle of Cr\u00e9cy), son of Guy I, Count of Blois and Margaret of Valois, was count of Blois and lord of Avesnes 1342 \u2013 1346.", "In 1340 in Soissons, he married Jeanne of Avesnes, Countess of Soissons( d. 1350), daughter of John of Avesnes, Lord of Beaumont.", "They had three children:", "Louis was killed at the Battle of Cr\u00e9cy."]], ["Margaret, Countess of Blois", ["Margaret of Blois( French:\" Marguerite\"; died 1230) was\" suo jure\" Countess of Blois from 1218 to 1230, in what is now France."]], ["Adele of Valois", ["Adele of Valois was a daughter of Ralph IV of Valois and Adele of Bar-sur- Aube.", "She married firstly Herbert IV, Count of Vermandois, and they had:", "She was also the second wife of Theobald III, Count of Blois, and they had:"]]]
supporting_facts: [["Margaret of Valois, Countess of Blois", 1], ["Margaret, Countess of Anjou", 1]]
evidences: [["Margaret of Valois, Countess of Blois", "mother", "Margaret, Countess of Anjou"], ["Margaret, Countess of Anjou", "father", "Charles II of Naples"]]
answer: Charles II of Naples