Question: Who is William Ii, Count Of Flanders's paternal grandmother?

Knowledge 1: William II, Count of Flanders
William III (1224 – 6 June 1251) was the lord of Dampierre from 1231 and count of Flanders from 1247 until his death.He was the son of William II of Dampierre and Margaret II of Flanders.Margaret inherited Flanders and Hainault in 1244 and immediately the War of the Succession of Flanders and Hainault began between William and his brothers, the Dampierre claimants, and the children of Margaret's first marriage to Bouchard of Avesnes.Margaret favoured William and declared him her heir.In 1246, Louis IX of France intervened to arbitrate the conflict and declared Flanders to William and Hainault to John I of Avesnes.Margaret officially invested William as count in 1247.In November of that year, William married Beatrice of Brabant, daughter of Henry II, Duke of Brabant and Marie of Hohenstaufen.They had no children.Meanwhile, the fight continued over Namur between the Dampierres and the Avesnes.On 19 May 1250, peace was signed.On 6 June the next year, William died at a tournament in Trazegnies.The war began anew with Guy, William's younger brother, taking up Flanders and the Dampierre claim. [SEP] Knowledge 2: William II of Dampierre
William II (1196 – 3 September 1231) was the lord of Dampierre from 1216 until his death.He was the son of Guy II, constable of Champagne, and Mathilde of Bourbon.His brother, Archambaud VIII, inherited Bourbon, and William inherited Dampierre.He married Margaret II, Countess of Flanders and Hainault, in 1223 and was thus regent of Flanders until his death as "Willem I" (or "Guillaume I").In 1226 William and Margaret founded a Cistercian nunnery at Saint-Dizier.Their sons William III and John continued to confirm and patronize the nunnery during their lives, including William II's burial there in 1231.William and Margaret founded more Cisterian nunneries throughout the county of Flanders, including Flines Abbey.He had four children (three sons) by Margaret and the eldest took part in the War of the Succession of Flanders and Hainault:
Knowledge 1: William II, Count of Flanders
William III (1224 – 6 June 1251) was the lord of Dampierre from 1231 and count of Flanders from 1247 until his death.He was the son of William II of Dampierre and Margaret II of Flanders.Margaret inherited Flanders and Hainault in 1244 and immediately the War of the Succession of Flanders and Hainault began between William and his brothers, the Dampierre claimants, and the children of Margaret's first marriage to Bouchard of Avesnes.Margaret favoured William and declared him her heir.In 1246, Louis IX of France intervened to arbitrate the conflict and declared Flanders to William and Hainault to John I of Avesnes.Margaret officially invested William as count in 1247.In November of that year, William married Beatrice of Brabant, daughter of Henry II, Duke of Brabant and Marie of Hohenstaufen.They had no children.Meanwhile, the fight continued over Namur between the Dampierres and the Avesnes.On 19 May 1250, peace was signed.On 6 June the next year, William died at a tournament in Trazegnies.The war began anew with Guy, William's younger brother, taking up Flanders and the Dampierre claim. [SEP] Knowledge 2: 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.
Knowledge 1: William II, Count of Flanders
William III (1224 – 6 June 1251) was the lord of Dampierre from 1231 and count of Flanders from 1247 until his death.He was the son of William II of Dampierre and Margaret II of Flanders.Margaret inherited Flanders and Hainault in 1244 and immediately the War of the Succession of Flanders and Hainault began between William and his brothers, the Dampierre claimants, and the children of Margaret's first marriage to Bouchard of Avesnes.Margaret favoured William and declared him her heir.In 1246, Louis IX of France intervened to arbitrate the conflict and declared Flanders to William and Hainault to John I of Avesnes.Margaret officially invested William as count in 1247.In November of that year, William married Beatrice of Brabant, daughter of Henry II, Duke of Brabant and Marie of Hohenstaufen.They had no children.Meanwhile, the fight continued over Namur between the Dampierres and the Avesnes.On 19 May 1250, peace was signed.On 6 June the next year, William died at a tournament in Trazegnies.The war began anew with Guy, William's younger brother, taking up Flanders and the Dampierre claim. [SEP] Knowledge 2: Beatrice of Brabant
Beatrice of Brabant( 1225 – 11 November 1288), was a Landgravine consort of Thüringia and a Countess consort of Flanders, married to Henry Raspe, Landgrave of Thuringia, and later to William II, Count of Flanders.She was the daughter of Henry II, Duke of Brabant, and Marie of Hohenstaufen.She had no children.

Answer: Mathilde of Bourbon