There is reason to suspect that the eleventh-century decline and demise of the Cumbrian realm of Strathclyde could have been connected with the expansion of the "Gall Gaidheil". One of the last recorded members of this kingdom's royal family was Owain Foel, King of Strathclyde, a man who lent military assistance to Máel Coluim against the Northumbrians in 1018. It is conceivable that "Gall Gaidheil" encroachment into Cumbrian territory was initiated upon Owain Foel's own demise. Máel Coluim could have also seized upon this man's death, claiming the Cumbrian kingship for himself.