Whether there were Viking or Norse - Gael kingdoms in the Western Isles or the Northern Isles at this time is debated .
In addition to these , the arrival of new groups of Vikings from northern and western Europe was still commonplace .
Whether there were Vikings or Norse - Gael kingdoms in the Western Isles or the Northern Isles at this time is debated .
In addition to these , the arrival of new groups of Vikings from northern and western Europe was still commonplace .