That's an interesting theory

[blpurdom]

No: HPFGUIDX 37375

--- In HPforGrownups at y..., "Jake Storm" <that1guy_hp at h...> wrote:
> The only real problem with this theory is that Ron is several 
> months younger than Harry, 

Actually, JKR gives his birthday as March 1, which would make him 
about five months older than Harry.
 
> We don't know Ginny's birthday, but she's at least six months 
> younger than Harry, but even with a late birthday, she had to have 
> been born before Harry defeated LV the first time, otherwise she'd 
> be two years behind him in school, as Harry was fifteen months old 
> when LV was defeated. 

But since we know Ron's birthday, assuming that she wasn't born 
prematurely and than Arthur and Molly waiting at least a month after 
Ron's birth to conceive again, she can't have been born much earlier 
than January 1, 1981, so she is likely to be at least five months 
younger than him, but probably more.  (Have pity on poor Molly. 
<g>)  If Hogwarts has a September 1 cutoff, as many people insist 
(to mirror the British educational system) her birthday would most 
likely be sometime in the first eight months of the year.  (I 
personally like April 1 for her birthday, because Fred and George 
would give her a really hard time if that were true.<vbeg>)

> This says nothing about Fred or George, who may well have been 
> born into troubled times as well...

We know from GoF that Fred and George were born in April of 1978, 
three-and-a-half years before the fall of Voldemort.

> do we have any canon about when LV started to raise his big stink?

Yes.  On page 13 of Philosopher's Stone, Dumbledore says, "We've had 
precious little to celebrate for eleven years."  This would imply 
that things started to get bad around 1970, although presumably, 
Voldemort would have found it necessary to begin building his power 
some time before that.  Bill and Charlie would have been small 
children (about 4 and 6) and this would have been six years before 
Percy was born and eight years before the twins.

--Barb