Treaty of Edinburgh–Northampton and cousin, and was crowned in 1306. He decisively defeated the English, under Edward II, at Bannockburn in 1314. Peace talks were held between 1321 and 1324. Little progress was made, as the English refused to recognise Robert the Bruce as King of Scots, although a truce was agreed in 1323, to last thirteen years. Edward II claimed he adhered to this truce, but he allowed English privateers to attack Flemish vessels trading with Scotland. For example, privateers seized the Flemish vessel "Pelarym", worth £2,000, and massacred all the Scots on board. Robert the Bruce demanded justice, but in vain,
Niall mac Cailein Dovenald Chambel and Sir Nel Chambel by their lands and bodies". In the same year, Edward granted some Campbell lands to an English knight, Sir John Dovedale. Such judgments were both a cause and effect of deteriorating relations with the English crown. So when Robert decided to rebel in 1306, it is not surprising that Niall and Domhnall were among the would-be king's first adherents. Niall was present at Scone in March 1306 when Robert was crowned King of Scots. After the defeats Robert suffered at the Battle of Methven and Battle of Dalrigh, Niall was one of the men