Revisiting the Black family tree

[Brianna HP]

No: HPFGUIDX 118294


Alshain:
> Unfortunately I don't have a degree in genetics, so I can't tell how many generations of intermarriage it would take for thirty-ish families to produce a 
gene pool so uniform that fresh blood would become necessary. What I'm dead certain about, however, is that the WW must have its Capulets and its Montagues, families that wouldn't interbreed even if their survival depended on it.

Brianna:
Well, from my research, it seems that the mention of
the family tree is to echo the account of the grail
keepers family in some of the Grail tales. 

   I even saw a place in France that has a tapestry
family tree of the descent of the family.  What I make
of it isn't a genetic thing, but that the "pure
bloods" are confused about the meaning of "pure
blood." 
  Some clues that got me to this point included the
container of apparently blood in the Black house hold.
It was just so striking. Then the tapestry scene came.