According to this account, Somerled agreed to join Olav in an expedition to raid Skye. The night before sailing, however, a ship wright or carpenter known as Maurice Mac Neil (the second name sometimes given as MacNiall or MacArill), by some accounts Somerled's nephew, secretly bored holes in the hull of Olav's ship using tallow and butter to temporarily seal them. On entering the open seas the tallow was washed away by the action of the waves and the king's ship began rapidly taking on water. Olav's urgent appeal for help was spurned by Somerled, until he consented to the previously sought marriage. Maurice then boarded the King's ship and filled the holes with wooden plugs he had previously prepared for the purpose. From that time the descendants of Maurice were called "MacIntyres," "carpenters (or shipwrights) sons".",