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
Simon Fraser (died 1306) London Bridge, along with Wallace's. Simon is known to have had the following issue: Simon Fraser (died 1306) Sir Simon Fraser of Oliver and Neidpath was a Scottish knight who fought in the Wars of Scottish Independence, for which he was hanged, drawn, and quartered in 1306. Simon Fraser was the son of Simon Fraser (died 1291) and Maria. Simon was captured during the Battle of Dunbar on 27 April 1296 and was sent to a prison in England. He was forfeited of his lands. He was released to serve King Edward I of England's expedition in Flanders in 1297.