Thank you, John Atkinson, for taking this mix-up on!!
Richardson says Agnes Of Aquitaine's parents were Philippe of Toulous, by William, Duke of Aquitaine. Their children Richardson list are
1. Guillaume X, Duke of Aquitaine, Count of Poitou,
2. Raymond of Poitiers, Prince of Antioch, married Constance of Antioch,
3. Agnes Of Aquitained.
Child of Agnes of Aquitaine, by Amaury (or Aimery) VI of Thouars, listed as 1. Geoffroi V, Vicomte of Thouars, married Aumur (or Aumou) ___.
Child of Geoffroi V of Thouars, by Aumur (or Aumou _____:
1. Guy de Thouars, Duke of Brittany, Count of Richmond, married (1st) Constance of Brittany., and (2nd) Eustache De Mauleon.
Guillaume X, son and heir, born 1099. married (1st) Aenor De Chatellerault, They had one son, Guillaume Aigres, and two daughters, Eleanor (or Alienor) [Duchess of Aquitaine], and Aelith (or Petronille) wife of Raoul, Count of Peronne). His wife Aenor, was living 3 March 1130. He married (2nd) Emma Of Limoges. They had no issue. Guillaume X, died 26 (or 28 March) 1136. His widow, Emma, married (3rd) (as his 1st wife) Guillaume VI, Count of Angouleme.
Child of Guillaume X of Aquitaine, by Aenor de Chatellerault:
1. Eleanor (or Alienor) Of Aquitaine, married (1st) Louis VII, King of France; (2nd) Henry II, King of England, Duke of Normandy, Count of Anjou.
Richardson's Royal Ancestry has links to more information for some listed here in this note.
Thank you so much, John, for taking this on!!