Wow! I have found out something interesting, just from this thread! This is all absolutely amazing. I always get kind of confused when I get to the family trees in the end, and many times I don't really pay attention. But it is very cool as many have said the way that these groups have been marrying is very similar to the royal families of Europe in many ways.
Well at least with Elrond being 9/16 elven. It gives him a very good reason to be elven, but then there is his brother...