Were the Picts Celts? Were William Wallace and Robert the Bruce Highlanders or Lowlanders? And did the English dislike Lowlanders or just Highlanders?
I thought the English disliked anyone not an Englishman.
The Bruce family was of the Anglo-Norman elite. Adam de Brus accompanied William the Conqueror to England where he was given large estates. The Scots-Irish American Witherspoon family traces it's lineage back to Robert the Bruce through John Knox (The Reformer) who married Margaret Stewart of the Ochiltree branch of the Stewart line.