Oh, so he does changes dynasties! That makes it even better for my future games.
I've seen him in my game yesterday, but almost immediatelly after conquering the Normandy and declaring himself duke - while still in his viking surname and faith - he died in a crazy personal combat against the (AI) duchess of Anjou, just after killing her husband the count of Mortain, if I remember it corretly, in a war for that particular county (goddamit, I should have kept that screenshot, it was awesome!). Unfortunatelly, of course, his heir was some random norse warrior, so I imagine the whole creation of the House de Normandie got off the plate for that particular playthrough.
