Lupin and "Prince" (adding a quote)

[potioncat]

No: HPFGUIDX 103612

Carin wrote: 
> I agree. Having read the last day's posts, I'm inclined to think 
GG is the HBP, not 
> Lupin, but that Lupin and his backstory will become central. 
Having GG be the HBP 
> would make all my worries about what "Prince" means disappear, and 
I'm thrilled to 
> think that the next book will have lots more on both GG and Lupin.
> 
Potioncat:
Sorry, I must be thick.  I even went upthread to see if I could find 
the source....but the only GG I know is Gregory Goyle.....

Who is GG?

Potioncat who likes just about eveything Snape says in Umbridge's 
office when she calls for Veritaserum, but will choose these two:

OoP by Snape:
Unless you wish to poison Potter--and I assure you I would have the 
greatest sympathy with you if you did--I cannot help you.  The only 
trouble is that most venoms act too fast to give the victim much 
time for truth-telling....

followed by

And Crabbe, loosen your hold a little, if Longbottom suffocates it 
will mean a lot of tedious paperwork, and I am afraid I shall have 
to mention it on your referece if ever you apply for a job.