Aymer de Valence, 2nd Earl of Pembroke (c. 1275 – 23 June 1324) is a Franco-English nobleman.
Though primarily active in England, he also has strong connections with the French royal house.
One of the wealthiest and most powerful men of his age, he is a central player in the conflicts between Edward II of England and his nobility, particularly Thomas, 2nd Earl of Lancaster.
Pembroke is one of the Lords Ordainers appointed to restrict the power of Edward II and his favorite Piers Gaveston.
His position changes with the great insult he suffers when Gaveston, as a prisoner in his custody whom he had sworn to protect, is removed and beheaded on the instigation of Lancaster.
This leads Pembroke into close and lifelong cooperation with the King.
Later in life, however, political circumstances combined with financial difficulties cause him problems, driving him away from the center of power.
Though earlier historians saw Pembroke as the head of a 'middle party', between the extremes of Lancaster and the king, the modern consensus is that he remained essentially loyal to Edward throughout most of his career.
Pembroke was married twice, and left no legitimate issue, though he did have a bastard son.
He is today remembered primarily through his wife's, Marie de St Pol, foundation of Pembroke College, Cambridge, and for his splendid tomb that can still be seen in Westminster Abbey.
He was also an important figure in the wars against Robert the Bruce.
