How old is Neville?

[joanne0012]

No: HPFGUIDX 38633

--- In HPforGrownups at y..., Leon Adato <adatole at y...> wrote:
> Do we have any canon information on how old Neville really is? I'm
> starting to wonder, and all my books are packed and sailing across the
> Atlantic.
> 
> Why do I wonder?
> 
> ------------------
> " I'd expect  my gran'd want to try, though, she's is always going 
> on about how I should be upholding the family honour. I'll just 
> have to -  oops" as he gets his foot stuck in the stairs. 
> ------------------
> 
> But what I can't recall is when Dumbledore announces the age limit.

He announced the age limit about two pages before the Neville quote you gave 
above.  But Neville is speaking in a context of the boys speculating about 
whether to enter, regardless of the age limit -- in the text just before the quote 
you gave, Fred  has just said, "Hey, Ron, what if we find out how to get 'round 
Dumbledore? Fancy entering?"

    "What d'you reckon?" Ron asked Harry. "Be cool to enter,
wouldn't it? But I s'pose they might want someone older.... Dunno
if we've learned enough.. ."

    "I definitely haven't," came Neville's gloomy voice from behind
Fred and George.
.
.
.
 
So I think Neville is speaking in the context of what if they found a way around 
the age constraint.