Halfblood versus Mudblood (Was:Snape and Sirius as half-brothers)

[potioncat]

No: HPFGUIDX 122370


>>>"TrekkieGrrrl" wrote
snip
So Snape's parents may very well be wizards, both of them, but he 
and Sirius  could still have the same father. OR mother. Just 
because the woman in  Snape's memory was cowering doesn't mean she 
couldn't have evolved into  nasty Mrs Black (though I personally do 
not think so, just keeping that  possibility open too)

Potioncat:
Here is a quote from JKR, taken from her official site:

"Q. Apart from Harry, Snape is my favourite character because he is 
so complex and I just love him. Can he see the Thestrals, and if so, 
why? Also, is he a pure blood wizard?

Snape's ancestry is hinted at. He was a Death Eater, so clearly
he is no Muggle born, because Muggle borns are not allowed to be 
Death Eaters, except in rare circumstances. You have some 
information about his ancestry there." snipping Thestral portion

Potioncat:
It seems to me that she is hinting that he is not Pureblood.  
Although he couldn't be Muggle born. So, either one of his parents 
is a Muggle (unlikely) or one of his parents is a Half-blood. Which 
would make him a Half-blood like Harry. (IRRC, a wizard is half-
blood if one parent is a Muggle or if two grandparents are Muggles)

I also think Severus and Sirius are closely related. When I first 
read PoA I thought they sounded very much alike in appearance and in 
behavior.  Although Sirius was a little more impulsive.

It would be unlikely that they would have the same mother.  It would 
be pretty hard to have 2 children born so closely with different 
fathers and to happen in a way that would fit this series. Some of 
the "same father" story lines that have been mentioned could work.  
It would also work for one of Snape's parents to have been disowned 
by the Blacks. And that would fit if Sirius' house would have been 
Severus' if his parent had inherited.

Of course, we could all have bats in our belfreys as we bark up the 
wrong tree.
Potioncat