Snape the Half-blood?

[pippin_999]

No: HPFGUIDX 44829

--- In HPforGrownups at y..., "bluesqueak" <pipdowns at e...> 
wrote:
> 
> Is Snape a half-blood? Not half-vampire, or half-dementor, or 
half any other 'interestin' creature' but plain old half-muggle.
> 

Time to trot out one of my theories for the benefit of those who 
haven't heard it before. Snape could be the child of Squibs. I can 
imagine that many old wizarding families have Squib servants 
like Filch. There could even be families of such servants 
attached to some of the old wizarding manors, no more 
magically able than Muggles really, but  part of the wizarding 
world, and still clinging to  pride in their wizard descent.

Perhaps young Snape, fascinated by magic, raided his  
wizarding manor's library secretly. The family wouldn't think they 
had to protect their magical knowledge from a Squib. 

 Then Snape's Hogwarts letter came.  Determined to establish 
his pureblood heritage, Snape became a Slytherin and even 
joined Voldemort, but eventually became disillusioned. 

This might also explain why Snape is on such close terms with 
Filch.

Pippin