Editing Earl of Pembroke (section)

===The third creation: de Valence (1247)===
* [[William de Valence, 1st Earl of Pembroke]] (c. 1225{{snd}}1296)
* [[Aymer de Valence, 2nd Earl of Pembroke]] (c. 1275{{snd}}1324) (extinct)

The next holder of the lands of the Earldom of Pembroke was William de Valence, a younger son of [[Hugh X of Lusignan|Hugh de Lusignan]], count of [[La Marche, Nièvre|La Marche]], by his marriage with [[Isabella of Angoulême]], widow of the English King John.{{sfn|Chisholm|1911|p=78}} In 1247, William, along with two of his brothers, moved from France to England, where their half-brother, [[Henry III of England|Henry III]] was King. The King married William to Joan de Munchensi (d. 1307), a granddaughter and heiress to the great [[William Marshal, 1st Earl of Pembroke]]. Valence was granted custody of the lands, and the title of Earl of Pembroke, giving him great wealth and power in his new land. As a result, he was unpopular, and was heavily involved in the [[Second Barons' War]], supporting the King and [[Edward I of England|Prince Edward]] against the rebels led by [[Simon de Montfort, 6th Earl of Leicester|Simon de Montfort]]. After the final defeat of the rebels at the [[Battle of Evesham]] in 1265, William continued to serve Henry III, and then Edward I, until his death in 1296.

William's eldest surviving son, [[Aymer de Valence, 2nd Earl of Pembroke|Aymer]] (c. 1275{{snd}}1324), succeeded to his father's estates, but was not formally recognized as Earl of Pembroke until after the death of his mother Joan in 1307. He was appointed guardian of Scotland in 1306, but with the accession of [[Edward II of England|Edward II]] to the throne and the consequent rise of [[Piers Gaveston]] to power, his influence declined. He became prominent among the discontented nobles, but in 1312, after the [[Guy de Beauchamp, 10th Earl of Warwick|Earl of Warwick]] betrayed him by executing the captured Gaveston, he left the allied lords and joined the King. Valence was present at [[Battle of Bannockburn|Bannockburn]] in 1314, and later helped King Edward defeat [[Thomas, 2nd Earl of Lancaster|Thomas of Lancaster]].{{sfn|Chisholm|1911|p=79}} However, by his death in 1324, he was again marginalized at court, and in financial trouble as well. His wife, [[Marie de St Pol]], a descendant of King Henry III, was the founder of [[Pembroke College, Cambridge]].