Dutch mapmakers P. Plancius and show an island called "Rookol" northwest of Ireland on their Map of New France and the Northern Atlantic Ocean (Amsterdam, c. 1594).
The name Rocabarraigh is also used in Scottish Gaelic folklore for a mythical rock which is supposed to appear three times, its last appearance being at the end of the world: "Nuair a thig Rocabarra ris, is dual gun tèid an Saoghal a sgrios."