Provable is rather the key bit - like Washington, I too am apparently a descendent of Odin, through several branches of my once-aristocratic family.

I put no stead whatsoever in it, as it both assumes no bastardy or affairs, and that legendary genealogies are factual.

That said, it is fun to watch "Vikings" and go "he's my 37th great grandfather".

In fact, going by my DNA I have a sizeable chunk of west African in me - which appears nowhere in the family tree.

This sort of thing was really popular in that period, and went along (and peaked) with romantic nationalism.

Probably Homo Sapiens, I gather.