Lily's heritage (was: JKRs comments on Petunia)

[mirodunum]

No: HPFGUIDX 111989

Brother fry said:
(snip) 
> From my point of view, I have always suspected that HP was 
> the heir of Gryffindor, and that with JKRs past history for 
> misdirection, why shouldn't this be via Lily! I do concede, that 
this 
> may be absolute twaddle, but the final outcome of the HP series 
> depends on something to with Lily. I just haven't heard a better 
> theory than one which entertains the idea that Lily is a half-blood!


Mirodunum says:

I'm not taking a position on the Heir of Gryffindor thing, but on the 
genetics.  We know that sometimes magical people are born of totally 
muggle lines.  We know that sometimes magical lines have non-magical 
children, Squibs.  We don't know how it happens.  What if at some 
point Gryffindor's line became squibs and gradually forgot their 
ancestry, because after a few non-magic generations they'd be 
indistinguishable from a normal muggle family?  Lily could then be 
born to these muggles. She'd be a pure muggle-born, wouldn't she?

Mirodunum