Ancient diocese, Scotland, comprised the territory now included in the counties of Caithness and Sutherland; founded by Malcolm III, 1066; restored by David I; first bishop, Andrew (1150-1184). Bishop Gilbert de Moray (1235-1245), who built its cathedral at Dornoch in Sutherland, is regarded as a saint in the Scottish church; feast, April 1,. Andrew Stewart II (1518-1542) was its last pre-Reformation bishop. Cathedral now in ruins.