Question about Pure Bloods and House of Slytherin

[stacygalore]

> Stacy:
>                               I am trying to write a fic and was wondering about something.  Can 
the offspring and 
>  descendants of a squib be considered pure blood, if all said descendants are indeed 
wizards/ 
>  witches?  Is it possible for a squib to have wizard/witch offspring?
>  Is it a requirement for one to be a pure blood in order to be a student in the house of 
  Slytherin?  

> Kemper now:
> I'm not sure if you read the books, so I hope I'm not spoiling anything, but Voldemort 
who's real name is Tom Riddle was sorted into Slytherin as was Severus Snape, the Potions 
Master and ex-Headmaster of Hogwarts.  Both have dads who are Muggles which therefore 
makes their respective sons not pure-blood.  As both are sorted into Slytherin, it seems 
the House of Slytherin does not require pure-blood status.  
> 
> Now to your earlier question... Squibs are not considered pure-blood even though they 
may have pure-blood heritage because they cannot perform magic.  In fact, Squibs aren't 
really considered at all... but that's a different issue.  I believe it is possible for a Squib to 
have a child who is a witch/wizard, but that child will not be considered pure-blood if it is 
discovered that one of the parents is a Squib.
> 
> jmao,
> Kemper

Stacy again:
OMG! I feel sooooo stupid asking that question about Slytherin requiring pure blood 
status.  Half Blood Prince (Snape), Tom Riddle.  DUH!!!  Yes, I have read all the books.  
Though reading HP while trying to earn a second college degree and raise a daughter, 
sometimes I just breeze through them without processing everything.  

As to the blood status thing.  Would the grandchildren of a squib and a wizard be 
considered pure blood if their parents are witches/wizards?