At the
Battle of Bannockburn (23–24 June 1314), Humphrey de Bohun should have been given command of the army because that was his responsibility as Constable of England. However, since the execution of Piers Gaveston in 1312, Humphrey had been out of favour with Edward II, who gave the Constableship for the 1314 campaign to the youthful and inexperienced Earl of Gloucester,
Gilbert de Clare. Nevertheless, on the first day, Bohun insisted on being one of the first to lead the cavalry charge. In the melee and cavalry rout between the Bannock Burn and the Scots' camp, he was not injured although his rash young cousin
Henry de Bohun, who could have been no older than about 22, charged alone at
Robert Bruce and was killed by Bruce's axe. On the second day, Gloucester was killed at the start of the battle. Hereford fought throughout the day, leading a large company of Welsh and English knights and archers. The archers who might have had success at breaking up the Scots
schiltrons were attacked and overrun by the Scots cavalry. When the battle was lost, Bohun retreated with the
Earl of Angus and several other barons, knights and men to
Bothwell Castle, seeking a safe haven. However, all the refugees who entered the castle were taken prisoner by its formerly pro-English governor,
Walter fitz Gilbert, who, like many
Lowland knights, declared for Bruce as soon as word came of the Scottish King's victory. Humphrey de Bohun was ransomed by Edward II, his brother-in-law, on the pleading of Edward's wife Isabella. This was one of the most interesting ransoms in English history. The Earl was traded for Bruce's queen,
Elizabeth de Burgh and daughter,
Marjorie Bruce, two bishops among other important Scots captives in England.
Isabella MacDuff, Countess of Buchan, who had crowned Robert Bruce in 1306 and for years had been locked in a cage outside Berwick, was not included; presumably, she had died in captivity. ==Ordainer==