Isabella's marriage proved difficult, largely due to Edward's intimate relationship with his close friend and probable lover, Piers Gaveston.
Cornwall | James Earl Jones | Prince Edward, Earl of Wessex | Louis Mountbatten, 1st Earl Mountbatten of Burma | Horatio Nelson, 1st Viscount Nelson | Herbert Kitchener, 1st Earl Kitchener | Charles Cornwallis, 1st Marquess Cornwallis | Earl | 1st United States Congress | Frederick Roberts, 1st Earl Roberts | Cornwall County Cricket Club | Bernard Montgomery, 1st Viscount Montgomery of Alamein | Earl of Derby | William Cecil, 1st Baron Burghley | Falmouth, Cornwall | Earl Warren | Earl of Pembroke | Duchy of Cornwall | Camilla, Duchess of Cornwall | Robert Harley, 1st Earl of Oxford and Earl Mortimer | George Villiers, 1st Duke of Buckingham | Earl of Warwick | Thomas Wentworth, 1st Earl of Strafford | Edward Smith-Stanley, 14th Earl of Derby | Earl of Shrewsbury | William Pitt, 1st Earl of Chatham | Simon de Montfort, 6th Earl of Leicester | Piers Morgan | Richard Neville, 16th Earl of Warwick | Joseph Lister, 1st Baron Lister |
On 9 June 1312 the Earl of Pembroke was escorting Piers Gaveston south after Gaveston's surrender to a group of rebellious earls at Scarborough Castle.
The late earl's sisters, Eleanor, Margaret (now widowed after the death of Piers Gaveston) and Elizabeth were by 1317 all married to favourites of Edward II: Hugh Despenser the Younger, Hugh de Audley and Roger d'Amory respectively.
Later Edward II bestowed it briefly to his favourite Piers de Gaveston and then under Edward II it passed in 1345 to John de Warenne, Earl of Surrey.
La Cerda's fate paralleled that of Edward II of England's Piers Gaveston and John II of Castile's Alvaro de Luna; the position of a royal favourite was a dangerous one.
Bereford was associated with Piers Gaveston, a favorite of Edward II, perhaps because he had bought land in the Honour of Wallingford held by the earl.