My theory on Priori Incantatem/ Weasley kids

[Steve Bates]

No: HPFGUIDX 1732

>> Does this make sense or am I way off? (I'm saying this in 
assuming  that a curse can only effect One person, therefore the 
curse of V. on Harry couldn't have bounced back on James, and James' 
death still  wouldn't be caused by the curse...)>>

I am not sure if you could even assume that a curse could effect only 
one person even under *normal* conditions--I can't think of any 
reason why it couldn't.  But in any case, any "rules" of magic 
probably went out the window when Voldy tried to kill Harry.  
Remember, there has to be some explanation for the destruction of the 
house as well, which wouldn't normally be caused by Avada Kedavra.  
Whatever was going on was definitely out of the ordinary.  So it is 
entirely possible that when Voldy's curse rebounded on him, it killed 
James as well, as a side effect.  (That, assuming that James was stil 
alive to be killed, which I still personally don't think was the case-
-I'm just saying that the theory that James really died after Lily is 
feasible).
As far as the Weasley childbirth gap goes, who says there has to be 
an explanation at all? Even if Arthur and Molly were shaggging like 
rabbits, whether or not Molly gets pregnant is pretty much a matter 
of chance.  And when you're dealing with a statistically low number 
of children such as the Weasleys have (You have to hit 30 or so 
before the number can be considered large by a statistician), it is 
not unlikely that the distribution of their ages seems clumped; it 
could be just entirely due to luck.