Early in his rule he ravaged [[Northumbria]] as far as [[Durham]] but was forced to withdraw. In 1016 or 1018 he was more successful, defeating the Northumbrians at Carham - which established definite Scottish rule over [[Lothian]] – and about the same time assumed control of the kingdom of [[Strathclyde]] after the death its king; appointing his grandson (the future [[Duncan I]]) as its ruler. In 1030/31 he accepted the overlordship of [[Canute]], and in the last year of his reign was forced to defend himself against family uprisings. There is some evidence he was assassinated. | Early in his rule he ravaged [[Northumbria]] as far as [[Durham]] but was forced to withdraw. In 1016 or 1018 he was more successful, defeating the Northumbrians at Carham - which established definite Scottish rule over [[Lothian]] – and about the same time assumed control of the kingdom of [[Strathclyde]] after the death its king; appointing his grandson (the future [[Duncan I]]) as its ruler. In 1030/31 he accepted the overlordship of [[Canute]], and in the last year of his reign was forced to defend himself against family uprisings. There is some evidence he was assassinated. |