Is Snape a pureblood? and a few other bits Ive been concerned about

[Hitomi]

No: HPFGUIDX 89537

 Bridget wrote:
>  I have A theory about why Voldy doesn't suspect Snape after the 
> Voldy/Quirrell Stuff: Snape didn't or at least wasn't supposed to 
> know that Voldemort was the reason Quirrell was trying to steal 
> the Stone and kill Harry. He obviously knew Quirrell was a bad guy 
> and tried to stop him, but that doesn't mean he knew Voldy was 
> involved. 
> Maybe I missed it, but I don't remember there being anything 
> saying that Snape knew about Voldemort. Although I do think Snape 
> is incredibly intelligent and may have figured out what was going 
> on, I don't believe he let on to know about Voldy if he did know. 
> Therefore he could conceivably go to Voldy and say something to 
> the effect of "Master I didn't realize he was working for you, 
> otherwise I wouldn't have interfered." And would then be welcome 
> back w/ open arms. If Snape did know, we don't know that Voldy knew 
> Snape knew. 


Hitomi:
No, Bridget you're absolutely right.  (Or, at least, I think you 
are, I don't have Book 1 with me ::sheepish grin::)  We DON'T know 
that Snape knew it was LV, just as we don't know that LV knew if 
Snape knew it was him or not (oy! that sounds really confusing).  I 
was assuming too much; thanks for pointing that out.  My only thing, 
LV being LV, it would still surprise me if he didn't, at the very 
least, suspect Snape of betrayal.  Like I said, I think Snape treads 
a very fine line, and is playing very dangerously.  And though he 
may be trustworthy, he never exactly shows all his cards, so Snape 
makes me just a little bit... anxious, I guess is the word I'm 
looking for.  But thereto, Snape is also a practiced Occlumens, just 
as LV knows Legilimency.  Snape may be able to lie convincingly in 
front of LV, though I would be surprised if LV didn't know Snape 
practiced Occlumency.  DD always seems to know just about 
everything, and LV is kind of the same way.  We don't know enough 
about Snape or the situation, but it does make me think.  

I just wanted to hear other thoughts on that.  Thanks again Bridget!

~ Hitomi