English Benedictine Reform acceptance of Benedictinism, and that the movement's greatest benefactor, King Edgar, had played a major role in the unification by his demands for adherence to the Benedictine Rule. Æthelwold probably tutored Edgar as a boy, and was very close to him; it is likely that Æthelwold was influential in persuading the king to carry through his reforms and support Benedictine monasticism. Monks became dominant on the bishops' bench during his reign. Æthelwold was close to Queen Ælfthryth and supported the claim of her son Æthelred (978–1016) to be king against his elder half-brother, Edward (975–978). Dunstan supported Edward, who succeeded
Edward I of England 1254, English fears of a Castilian invasion of the English province of Gascony induced Edward's father to arrange a politically expedient marriage between his fifteen-year-old son and thirteen-year-old Eleanor, the half-sister of King Alfonso X of Castile. Eleanor and Edward were married on 1 November 1254 in the Abbey of Santa María la Real de Las Huelgas in Castile. As part of the marriage agreement, the young prince received grants of land worth 15,000 marks a year. Although the endowments King Henry made were sizeable, they offered Edward little independence. He had already received Gascony as early as 1249, but