Clan Donnachaidh the Battle of Methven in 1306. The clan asserts that Stout Duncan's relatives and followers (not yet known as Robertsons) supported Robert the Bruce at the Battle of Bannockburn in 1314. His descendants became known (in English or Scots) as the Duncansons, or Gaelic "Clann Dhònnchaidh", "Children of Duncan". Duncan is believed to have been killed at the Battle of Neville's Cross and was succeeded by Robert, from who the Clan Robertson takes its name. Robert's brother, Patrick, was the ancestor of the Robertsons of Lude who were the principal cadet branch. In 1394 a clan battle took place between
Robert the Bruce Domhnall I, Earl of Mar and his wife Helen. Almost the first blow in the war between Scotland and England was a direct attack on the Bruces. On 26 March 1296, Easter Monday, seven Scottish earls made a surprise attack on the walled city of Carlisle, which was not so much an attack against England as the Comyn Earl of Buchan and their faction attacking their Bruce enemies. Both his father and grandfather were at one time Governors of the Castle, and following the loss of Annandale to Comyn in 1295, it was their principal residence. Robert Bruce would have