Now you're talking! You attack Godfrey at the Isle of Man. He's a bit of a push-over and you defeat him. He flees to Norway to recover and re-consider his plans. But at least he's out of your hair for a while!
The nobles on Man wll not accept you as ruler. You have no direct bloodlines and they are sticklers for tradition. But your son Dungall has a legitimate claim. You establish him as ruler under your close supervision.
Now you have control over Man, you have successfully gained control of the whole western seaboard. You are a master of the seas – 'King' of the Isles. The people of the west are united toward one purpose – to deter the Anglo-Norman changes of the King of Scots.
;)
;)