Why did the House of Normandy go extinct? Why didn't they translate their military success into, how can I put it, a reproductive one, the way Genghis Khan did?

by [deleted]

[deleted]

The_Manchurian

As in, the descendants of Rollo, Duke of Normandy?

They didn't go extinct, one of their descendants is currently Queen of Britain, Canada, Australia, etc (as well as Duchess of Normandy, of course). Not to mention the various other royal families who are related to hers.