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| 1270 | Birth |  |
| Birth of Aymer de Valence, son of William de Valence Earl of Pembroke |
| 1287 | Battle of Stirling Bridge | |
| Stirling Bridge Fights at Stirling Bridge for Edward I |
| 1300 | Invasion of Scotland | |
| Takes part in the invasion of Scotland |
| 1301 | Invasion of Scotland | |
| 1303 | Invasion of Scotland | |
| 1306 | Battle of Methven | |
| 19th June Methven Routes the Army of Robert Bruce |
| 1306 | Invasion of Scotland | |
| Perth By the middle of summer Pembroke make his base at Perth, where he was joined by many of the supporters of John Comyn |
| Leads Edward II's army against the Scots |
| 1306 | Plenipotentiary | |
| Edward I appoints Aymer de Valence, Comyn's brother-in-law, and the future Earl of Pembroke, as his plenipotentiary in Scotland, with powers to raise the Dragon Banner, signifying that no quarter would be given to Bruce |
| 1306 | Siege of Kildrummy | |
| June Kildrummy Edward II & Pembroke lay siege to Kildrummy after victory at Methven |
| 1307 | Battle of Halidon Hill | |
| 10th May Halidon Hill Defeated by Robert Bruce who gains revenge for defeat at the battle of Methven |
| 1311 | Rebellion | |
| Lords Ordain Supports the rebellion of the Ordainers against King Edward's favorite Piers Gaveston |
| 1312 | Arrest | |
| Warwick Gaveston is placed in Valence's custody |
| 1312 | Execution of Gaveston | |
| Supports Edward II when Lancaster has Gaveston taken from Pembroke & executed |
| 1314 | Battle of Bannockburn | |
| 24th June Bannockburn Shares in Edward II's defeat by the Scots, commands the rearward division |
| 1314 | Siege of Stirling | |
| Stirling Takes part in Edward II's failed attempt to capture Stirling Castle |
| 1318 | Constitution | |
| A Parliament at York confirms the treaty of Leek, the Ordinances are confirmed once more and a new council of seventeen appointed, including eight bishops, four earls, four barons, and one banneret |
| 1318 | Parliament | |
| York A Parliament at York confirms the treaty of Leek, the Ordinances are confirmed once more and a new council of seventeen appointed, including eight bishops, four earls, four barons, and one banneret |
| 1318 | Rebellion | |
| Arranges a temporary peace between Edward II & Thomas of Lancaster |
| Becomes virtual ruler of England, 1318-1322 |
| 1318 | Treaty of Leake | |
| A Parliament at York confirms the treaty of Leek, the Ordinances are confirmed once more and a new council of seventeen appointed, including eight bishops, four earls, four barons, and one banneret |
| Aymer brokers a deal whereby Lancaster agrees to relinquish power, in return for which he receives a pardon for himself and his followers |
| 1322 | Battle of Boroughbridge | |
| 16th Mar Boroughbridge Defeat of Thomas of Lancaster marks the rise of the Despensers & decline of Pembroke |
| 1324 | Death | |
| Death of Aymer de Valence |
