ok, enough about snape.. let's give the limelight on RAB. the most obvious candidate for him, like everyone said, is that he is regulus "acturus" black. the evidence are as follows:
- the translation to other language of HBP also tranlated the meaning of "black" to their own language like the dutch translation changed RAB to RAZ for it to be regulus zwarts; the norwegian edition has been translated to RAS for regulus svaart, while on the finish translation, it's been translated to RAM regulus musta. musta, svaart and zwarts which all means black.
- the message in the locket says with an openning of "to the dark lord". we all know that snape, once a deatheater, calls u-know-who as dark lord even if he's not anymore a deatheater.
- about his identity, he was a deatheater who later found out that he do not have the guts to do the doings of voldemort. he tried to dissasociate himself but V or his deatheaters killed him because of treason. so maybe, because he already knew that he will be killed, he destroyed the horcrux knowing that this is the most significant thing to do before he dies.


Comments: 21
RAB was such a big clue at the end of the last book, I would think it must be someone Harry can find or contact somehow.
Regulus Black - He seems to have the most going for him. The right initials, a Voldemort follower who may have become disillusioned, and apparently killed by Voldemort.
Professor Binns - Do we know his first name? How exactly did he die?
Amelia Bones - Ministry of Magic official with a daughter at Hogwarts. Wrong initials, though RAB could be a husband or relative.
Lastly, there are the kids Tom Riddle took to the cave in his youth. One of them might have the desire to do something and would also have the knowledge of the cave. I haven't been able to find that section of the series again, so I am not sure what the kids names were.
I still think Regulus is the most likly, but I thought these characters might provide alternatives to ponder.
Sirius believed his brother was too insignificant a follower to be killed by Volemort himself. He therefore assumed that he was killed by one of the Death Eaters. But maybe he was killed by the Horcrux itself -- after all, he had to take the same poison stuff that Dumbledore did to get to the original locket, and a death by poison probably doesn't look much different from a death by Avada Kedavra.
A certain heavy gold locket that no one could open was found in Sirius' (and Regulus') home when Mrs. Weasley and the kids were cleaning. It was allegedly thrown out, but Kreacher was stealing small items out of the bin like that and later, when Hermione went to his "nest", she saw that he had a collection of "shiny things" in there. Could that be where it is?
Did R.A.B. manage to kill the Horcrux inside it? Or is that part of Voldemort's soul still alive but no longer in the place where he originally hid it?
That is a very good point about the locket at Grimauld Place. And I would think that Voldemort wouldn't just set all those obstacles to get to the Horcrux, he would also make the actual Horcrux harder to destroy, we must all remember what Dumbledore said about destroying the Gaunt family ring.
At some point in the last book, I think Harry is going to have to go back to the house at Grimauld Place, and might just ask Kreacher the right question to get that locket, and maybe even more...
Grimauld Pl. would be the perfect place to hide a horcrux from the Dark Lord, seeing as one has to know the precise address to get there. If I'm not mistaken, did the locked not have a serpent on the front of it?
There is also a theory I'd like to suggest. If Rowling were going to bring Sirius back, as has been suggested before...Wouldn't it be just SO clever of him to use his BROTHER'S name? Therefore flying completely under everyone's radar?
Meh. It's a theory.
A disturbing thought came to my mind - what if Regulus took the locket, but whoever killed him got it back and put it back in the cave, so the one Harry thinks is a fake is really real? What if it is charmed to look different and fake? That was fun.
I don't know about Mundungous taking it. He seemed to have the cutlery and the goblets that Sirius told him he was free to steal, really. But I agree more with the theory that Kreacher saved it. I took noted the "shiny objects" that were in his nest.
I don't think its possible that the locket could have been swapped and left as a fake but really real. It doesn't make sense. The horcruxes have strong enchantments on them. I think the clue in book 5 about the heavy locket that no one could open fits the description to a T as to being the horcrux. And its just sneaky of Rowling to mention it as a throw away item.
I also think Regulus shouldn't be discounted as the real RAB. What sometimes look like "new" characters in each book usually aren't. I've listened and reread all the books over and over. Book 4 mentions "The Lovegoods" even. They aren't the only ones but there are always hints of wizard and witches names that come as "fly by" or "throw away" names that come back to be important. Mundungus' name is thrown out a couple times before he actually appears in book five, for another example.
There has to be a reason why Rowling mentioned Regulus in both books five and six. Why she pointed out the heavy locket that no one would open. And why she was keen to make note twice, once in book five and once in book six that Regulus was more than likely killed by Voldemort himself. Which is something reserved for real nusainces usually. I'm sure he wanted to find out how Regulus found out about his Horcruxes in the first place, let alone found one. Which will, indeed, be interesting to find out how he found out.
To the dark Lord,
I know I will be dead long before you read this but I want you to know that it was I who discovered you secret. I have stolen the real horcrux and intend to destroy it as soon as I can. I face death in the hope that when you meet your match, you will be mortal once more.
R.A.B.
That proves whoever wrote this note is likely dead now, doesn't like You-Know-Who having horcruxes, but wants him to be mortal once more.
You are so right about dumbledore not making a horcrux--its dark magic and as mcgonagall stated in the begining of book 1 Dumbledore refuses to perform dark magic.