Doctor Who - Series 8

 Spoiler

I'm thinking John Hurt could be the Valeyard...or someone similar. For those who don't know who the Valeyard is, here's the Master explaining who he is:

I was thinking the same thing. We already have one Old-Who thing, why not another? But seriously, two "missing" Doctors? Seems fishy...

Questions about names:
When did River learn his name? It wasn't when they got married (as he whispered "Look in my eye", not his name) and it wasn't at Trenzalore (as this took place after the Library). He did whisper something to her when he was dying (and in the Library episode, he did mention there was only on time he could have told her his name, ie. when he was dying) in Let's Kill Hitler, but I don't get how his name would've inspired her to give him all her regenerations.
Why is the Doctor's name so big? I mean, sure, last Time Lord, ender of the time war, blah blah, but it's a fucking name. And also, the Doctor mentioned his name "isn't the point", what he chose as his name was, and John Hurt, not acting "in the name of the Doctor, wasn't actually a Doctor, as Clara never met him, all across the Doctor's time stream.

And random questions:
Did we ever learn about the Doctor's parents? Maybe he's some kind of super-Time Lord?
Did Susan ever learn his real name? She was his granddaughter? Had he already taken up his new name by that time?
When did he choose his name?
Who set up all the junk at Trenzalore? River's fake grave, his burial site, etc? (They had to have known his name, to set that lock on the doors.)
Why did the Doctor agree to fight in the Time War? And we know Eight fought in it too, not just John Hurt. When did Eight regenerate (assuming Hurt is the 8.5th Doctor)? And did John Hurt regenerate into Nine when he used the Moment? And why did Ten (and Nine) seem sad about the killing of the Time Lords when "they" didn't even do it?
Why did Ten in The Impossible Planet ay it was impossible for something to come from before the universe when several Old Ones (eg. the Great Intelligence) have?