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 a period with one or more allied English noble families, such as the de Clares of Gloucester, or perhaps even in the English royal household. Sir Thomas Grey asserted in his "Scalacronica" that in about 1292, Robert the Bruce, then aged eighteen, was a 'young bachelor of King Edward's Chamber'. While there remains little firm evidence of Robert's presence at Edward's court, on 8 April 1296 both Robert and his father were pursued through the English Chancery for their private household debts of £60 by several merchants of Winchester. This raises the possibility that young Robert the Bruce was on