You are watching: Who stole the elder wand from ollivander
Wasn"t Gregorovitch killed by Voldemort? Wouldn"t that make Voldemort the real master of the Elder Wand, and therefore able to kill Harry?
But Grindelwald has overpowered Gregorowitsch because he shocked him with a "stupor" just at the moment he jumped out of the window (read the book) So it isn't only that he stole it, he overpowered Gregorowitsch with his own wand.
Defeat isn"t limited to death. Harry won it from Draco just by overpowering him and taking his other wand. Death is only part of the wand"s history. It"s not necessary.
So Voldemort, on killing Gregorovitch, never won the wand as Gregorovitch was no longer the owner. We can twist some words to say that "stealing" a wand is nearly the same as "defeat", as, after all, once you"re wandless, you"ve lost. This gets reiterated when Harry steals Draco"s wand, along with two others. After Grindelwald, Dumbledore won it fair and square after duleing him. Draco disarmed Dumbledore, so he won it as well. Harry won it in an indirect manner, he disarmed Draco"s normal wand, not the Elder wand (of which Draco knew nothing).
Well, you are making the same mistake Voldemort made. The ownership of the Elder Wand doesn"t change by murdering only.Grindelwald stole it from Gregorovitch, which is enough to consider the wand won.Gregorovitch must have stolen it as well, since there"s no reason to think he was a murder or exceptional at dueling (he was only a wandmaker, an artisan).Dumbledore overpowered Grindelwald in their legendary duel.Draco disarmed Dumbledore.Harry overpowered Draco by stealing his wand, and that was enough for the allegiance of the Elder Wand to change from Draco --who never even touched it-- to Harry.
Note in the last point that Harry interacts with Draco, not with the wand. Even Voldemort understands this, because he kills Snape even though he had the wand already.
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Wands must sense --somehow-- a shift in power, and that must define their allegiance (the wand chooses the wizard). Remember that Draco was really weak when Harry took the wands from him (he didn"t even try to defend himself), and Harry was full of energy and emotions, so the wand chose him, who at that moment was the stronger wizard.