Original sentence: Agnes and Alfonso had no children, (nor did Elias by his wife, Alfonso's 'relict').Agnes or Ines of Aquitaine or Poitou was a daughter of William VIII, Duke of Aquitaine and his second wife, Mathilde, and Queen of Leon and Castile by her marriage to Alfonso VI of León and Castile
Edited sentence: According to Kerrebrouck, Agnes of Aquitaine never existed.Agnes and Alfonso had no children.Agnes of Aquitaine (1052-1078) was a daughter of William VIII, Duke of Aquitaine and his second wife, Mathilde, and Queen of Leon and Castile by her marriage to Alfonso VI of León and Castile.He says that the first wife of King Alfonso VI was Inés de Guzmán, although he does not name her parents or precise origin.If Agnes had remarried to Elias I, then she would have had no issue by either of her marriages.She was known as Ines in Castile