How English Were the Kings of England?

If you read enough historical fiction about English royalty you learn pretty quickly that English is about the last thing any of them were. I was reminded of this oddly enough by a comment in Edward Rutherfurd's RUSSKA when I read a comment that Czar Nicholas II was mostly German. And he was regarded, for a while anyway, as the Father of Russia.

I thought I would take a look at some English kings to see just how English they were. I will start with that extremely English King Edward III.

Edward III
Father: Edward II's mother was Spanish, but let's just call Edward II English so we can get on with this exercise, OK?
Mother: Isabella's mother was also Spanish but let's call her French for now.
Making him: for simplicity's sake, let's call him 1/2 English and 1/2 French

I apologize to matrilinealists.. I am going to continue to simplify the mother's lineage.

Edward, the Black Prince
Father: 1/2 English, 1/2 French
Mother: Flemish
Making him: 1/2 Flemish, 1/4 English, 1/4 French - probably just as well he got skipped.

Richard II
Father: 1/2 Flemish, 1/4 English, 1/4 French
Mother: English
Making him: 5/8 English, 1/4 Flemish, 1/8 French - well rounded, as they say was his mother.

Henry IV
Father: same as Edward III
Mother: English
Making him: 3/4 English, 1/4 French - gettin' there.

Henry V - Do they get any more English that the hero of Agincourt???
Father: 3/4 English, 1/4 French
Mother: English
Making him: 7/8 English, 1/8 French - way to go, Harry!

Henry VI
Father: 7/8 English, 1/8 French
Mother: French
Making him: 5/8 French, 3/8 English - no wonder he was so confused.

Edward IV - now it gets complicated...
Father: Can we call Richard, Duke of York, English enough?
Mother: And how about Cecily neville?
Making him: Does this make Ned English enough?

Edward V
Father: English enough
Mother: English enough
Making him: English enough

Richard III
Father: same as Edward IV
Mother: same as Edward IV
Making him: English enough

Throw a little Welshman in the woodpile, and you get the next set, though while Edward VI could be called English enough his sister Mary I was half Spanish...

And then after thoroughly English enough Elizabeth, of course, we go to half Scots and .... well, you get the idea.

It actually gets more complicated once it was easier to import foreign royalty...

P.S. Yes, I know they didn't use the Union Jack until later... this is symbolism.