I look foreard to Regnar's list.

The ones I know of are easy, because they are Norman: and Normans, as we know, are from Normandy: and Normandy is a modern English contraction of the original meaning "land of the Northmen" (formerly Neustria). So any Norman dynasty was descended from the vikings. These include Normandy (of course); duchy of Apulia; kingdom of Sicily; principality of Antioch; various holdings scattered in northern Spain (sorry I don't recall any names); kingdom of England; Brittany; Flanders; Boulogne; Scotland; eastern Ireland; the Hebrides and Shetland islands; Iceland; the Russ of Russia; all of the Baltic states had viking dynasties ruling them at one time or another.

Interestingly, if you are going to get literal about it, there was no difference in essence between a Norseman and an earlier Saxon, Angle or Jute raiding/invading England. So from the disappearance of Rome from the island you could say that it became the property of "vikings", and was taken over partially by later ones. Cerdic of Wessex was not (most likely) a Saxon himself; but rather a "Roman" Briton. But he certainly behaved like a common "viking" and his dynasty intermarried with them later. So it seems like the "vikings" (raiders of northern Europe) got into just about everybody's lineages.

I hope that we get more details on this interesting topic. Because that just about exhausts my "store" of knowledge.