The Earldom of Orkney is the official status of the Orkney Islands. It was originally a Norse feudal dignity in Scotland which had its origins from the Viking period. In the ninth and tenth centuries it covered more than the Northern Isles (Norðreyjar) and included Orkney, Shetland, Caithness, and Sutherland. The ruling position of Jarl or Earl of Orkney was heritable.