The Wallace seal attached to the Lubeck Letter of 1297 gives substance to the theory that Wallace's father was from Kyle Regis (this area) and a rock formation "up the glen" is named Castle William, supposedly after the Scottish patriot's fortification.
The Wallace seal on the Lubeck Letter of 1297 supports the theory that Wallace's father hailed from Kyle Regis and that a rock formation in the area is called Castle William, possibly named after the Scottish hero's stronghold.