Argyll , archaically Argyle (Earra-Ghàidheal in modern Gaelic ), is a region of western Scotland corresponding with most of ancient Dál Riata, which was located on the island of Great Britain. In a historical context, Argyll can be used to mean the entire western coast between the Mull of Kintyre and Cape Wrath. At present, Argyll (sometimes anglicised as Argyllshire) is also one of the registration counties of Scotland. Argyll was also a medieval bishopric with its cathedral at Lismore, as well as an early modern earldom and dukedom, the Dukedom of Argyll.