Michael Scot
Scottish Borders folklore maintains that a Soulis was involved with the Black Arts being schooled with Michael Scot, the "wizard of the North". Sir Walter Scott made this Evil Lord Soules - Sir William and gave him a familiar called Robin Redcap. In retaliation for a long history of cruelty, locals boiled this Lord Soules alive at Ninestane Rig. The more likely culprit would have been Sir Ranulf (Randolph) de Soules of Liddel (born c.1150 and murdered by his servants in 1207/8)