Walking through Dunvegan Castle’s restored rooms filled with Clan MacLeod’s heirlooms and treasures, visitors will pass a frame containing what looks like a tattered piece of cloth hanging on the wall. This is the Am Bratach Sith (Fairy Flag), a small square of ancient silk with supernatural origins. Its powerful magic is believed to have protected the clan for centuries. At least three versions of the flag’s origin story exist. The first tells of a Clan MacLeod ancestor who took part in one of the Crusades. On his journey, he…