Suibhne subsequently wandered various parts of Ireland, into Scotland and Western England. He went from Roscommon to Slieve Aughty, Slieve Mis, Slieve Bloom mountain ranges; Inismurray island; the Cave of St. Donnan of Eigg, an island in the Scottish Inner Hebrides; then tarried for a month and a half in Carrick Alastair (Ailsa Craig off Scotland. He reached Britain and befriended a Fer Caille (Man of the Wood), who was another madman, spending an entire year together. The Briton giant met his predestined death by drowning in a waterfall.