Fair enough, Malcolm. I'm not entirely convinced that the swing is "obviously" an invention of MacMillan's, but I will agree fully on the point of the whole drawing-room Jacobite thing.Something my folk band has fun with when we're playing at Scottish games, etc., "Did ya know that 'Jacobite' song was written by a Campbell?" is a great way to tweak the noses of some folks.
Cheers -
Pete