 By capturing the islands Magnus III subdued the Norsemen who had seized the islands centuries earlier and imposed a more direct royal control.The Norwegian control of both the Inner and Outer Hebrides would see almost constant warfare until being ultimately resolved by the partitioning of the Western Isles in 1156.The Outer Hebrides would remain under the Kingdom of Mann and the Isles while the Inner Hebrides broke out under Somerled, the Norse-Celtic kinsman of both Lulach and the Manx royal house.