If I may make an interjection, it is years since I read the "Heimskringla" (more than 40) but I seem to remember that Odin-from whom most of the Royal dynasties of Europe seem ultimately to descend was a friend of Abraham before both of them left Ur with their followers.
Also I believe that the only family who can definitey trace their ancestry to the Crovan Dynasty of Mann are The Skanke family in Scandinavia.
All my thanks are due to Frances for her hard work and giving me clues, because of her suggestions I have found at least forty ancestors and co-descendants toghether with spouses etc.
Rick