birth, [37];

cr. earl of Caith. and Sutherland, [37] , [38];

ancestor of all subsequent Norse earls, [37];

established at Duncansby, [38], [39];

character, [38];

claimed Orkney, [39], [40];

war with Duncan I, [40];

at Deerness, [41];

Turfness, [41];

conquests in Fife, [41], [42];