Founded c.1128,by David I. It comprised territory on the northeastern coast of Scotland, bounded on the north by the bishopric of Caithness, south by Argyll, and west by Moray and Moray Firth. The first bishop was Macbeth (c.1128), and the last pre-Reformation bishop, John Leslie (1565-1596). The cathedral at Dornoch, dating from the 14th century, is of Gothic architecture; it is in ruins save for the south aisle and a portion of the chapter-house.