Henry de Percy, 1st Baron Percy the commissioning of Warwolf, a giant trebuchet which flattened the curtain walls. The defenders had tried to surrender four days earlier, but had been made to wait by the king while he tried out his new toy. In September 1305 the first joint English and Scottish parliament met at Westminster to agree a constitution for the unified state, with Percy playing a leading role in the negotiations, but Robert Bruce, a leading representative of the Scots, was already conspiring to rebel. On 25 March 1306 Robert Bruce was crowned King of Scotland at Scone Abbey, upon which Edward confiscated his
Robert the Bruce this Bruce was then excommunicated by the Pope (although he received absolution from Robert Wishart, Bishop of Glasgow). Bruce moved quickly to seize the throne and was crowned king of Scots on 25 March 1306. Edward I's forces defeated Robert in battle, forcing him to flee into hiding before re-emerging in 1307 to defeat an English army at Loudoun Hill and wage a highly successful guerrilla war against the English. Bruce defeated his other Scots enemies, destroying their strongholds and devastating their lands, and in 1309 held his first parliament. A series of military victories between 1310 and 1314 won