Like all self-respecting castles of antiquity, Loudoun castle has its ghosts. The best known is the Grey Lady who flitted about the castle with such regularity that she was accepted as part of the fittings and did not disturb the smooth running of the castle.
There is also the Phantom Piper and the Benevolent Monk who seems to wander the policies wishing anyone who comes within earshot 'Pax Vobiscum' (Peace be with you).
However, in recent years there have been no sightings.....
but you never know......