Hagrid's age, was Mirror of Erised, Harry's Family

[joanne0012]

No: HPFGUIDX 39293

--- In HPforGrownups at y..., ComtessadeChats at c... wrote:
>      Didn't  Tom Riddle and Hagrid attend Hogwarts together?  I can't remember 
how many  years there were between them, but I am assuming two or three.  So 
that would  mean that Hagrid too, would be old enough to be Harry's grandfather.  
I never  got the impression that Hagrid was that old.  A bit older than Harry's 
> parents, yes, but not a whole generation.  What do you think?

Yes, he's that old.  Remember, Riddle is more than 50 years older than Harry.  

Or to put it more technically: based on the various clues in the canon (a 
combination of Riddle events, that infamous Deathday calendar date, etc.) the 
Lexicon has put Hagrid's birth date in 1929 and Harry's in 1980, a difference of 
51 years. And to further underscore the plausibility, the Lexicon has estimated 
the birth years of Harry's parents as around 1960, so they'd be 31 years 
younger than Hagrid.

http://www.i2k.com/~svderark/lexicon/w_people.html#Main%20characters