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
Battle of Dupplin Moor of the battle, although there is no strong reason to locate the battle there. The Battle of Dupplin Moor was the worst Scottish defeat since the Battle of Falkirk, 34 years before, far exceeding the setback at Methven. The losses were heavy, but they could be made good, and Dunbar's army, probably as strong as Mar's, was still in the field. However, the worst casualty of all was the national confidence that had grown from the successive victories of King Robert Bruce, which had produced an illusory sense of invulnerability. Once again the nation had tasted serious defeat, and the