Guess these famous people from their genealogies

[James Dow Allen]

I posted two puzzles in rec.puzzles with no solutions.
This newsgroup is probably a better choice, so I'll repost here.

Trivia Question 1)
Charlotte had two daughters.
Charlotte's sister Mary had two sons.
The two sons married the two daughters.
Each of those marriages produced a daughter.

The two daughters just mentioned (granddaughters of both Charlotte and
Mary) married two brothers. Each of *those* marriages produced a daughter.

And those two daughters just mentioned (Charlotte's great-granddaughters)
took turns marrying the same businessman. And each of *those* two marriages
produced a son who became a very famous politician.

Who are those famous half-brothers (Charlotte's g-g-grandsons)?

Trivia Question 2)
This was presented as a complex genealogy riddle which you can find here:
https://groups.google.com/forum/#!topic/rec.puzzles/WJXFrDjRoyw
But let's ignore the rest of the genealogy. Just tell me which man
* had a grandfather who raised birds,
* had a niece whose husband was bit by a mosquito, and
* had an especially newsworthy elevation to nobility.

-- James