Who was he?

Mowbray was a Scot – but no friend of Bruce. He may even have nearly captured King Robert during the Battle of Methven in 1306. In 1314 he was governor of English-held Stirling Castle, then under siege by Edward Bruce.

The two men came to an agreement that unless the castle was relieved by the English by 24 June then it would be returned to Scottish control. It was this deal which led, inevitably, to the battle of Bannockburn.

At Bannockburn

On 23 June Mowbray left Stirling to meet Edward II. Technically, the castle had now been relieved, so there was no longer any need to fight. However, Edward was determined to make the most of this chance to defeat Bruce in battle.

After Bannockburn

Fleeing from the battle, Edward II headed for Stirling Castle, only to find the gates barred against him. Mowbray realised that it was only a matter of time before the victorious Scots took the castle, so it was the last place that Edward should be. Mowbray later switched sides and was killed in Ireland fighting alongside Edward Bruce in 1318.