Lily's Blood Theory

[aceworker]

No: HPFGUIDX 155807

At Godrics Hollow perhaps Lily had cast some sort of ancient old magic
spell on Harry before Voldermort attacked her that made it so that no
one could kill Harry except someone of "Harry's blood". 

Which is why Lily wanted Voldermort to kill her. Once she was dead she
could guarantee that Voldermort could not kill Harry by possessing her. 

So when Voldemort tried to kill Harry his AK backfired because he
could not kill Harry as he was not of "Harry's blood".

Voldemort knew he could not defeat Harry until he was of "Harry's
blood" which is why he used Harry's blood in his resurrection in GOF
and why he then tried immediately to kill him. It would have almost
guaranteed him immortality against all but accident.(Since there are
not other known Potters)     

It also guarantees that he can not be killed by any other person
except for Harry as he is also now of Harry's blood. It is as if he
were Harry's twin. They not only have twin wands, but twin blood.    

Which explains Dumbledore's gleam because it ensures that Voldemort
will have to carry out the prophecy. Which means they can plan for it.

Perhaps unknown to Voldemort there is another of "Harry's blood". If
DD is related to Harry then could it be Aberforth? Nah. Could Neville
actually be Harry's twin somehow? 

Or perhaps the Weasleys have become so close to Harry that they are
know his familly and of his "blood" so a Weasley such as Ginny or Ron
or even Hermione could finish off Voldemort. 

Are the Dursleys of Harry's blood? Is there a reason JKR had Dudley
learn boxing. Not that I think it is likely, but is Dudley the muggle
the true savior of the wizarding world? Can you imagine Dudley putting
Voldemort down for the final count?    

Maybe Dudley is the "other" who has to decide between Harry and
Voldemort? That would be the twists of all twists wouldn't it?
The Dursley's start the series maybe then end it with another scene
from Vernon's POV. Another scene of celebration as we fade to black
For Voldemort quite literally. 

DA Jones