Who knows about Horcuxes? (Was: Minerva and Tom: 6 theories)

[Hagrid]

No: HPFGUIDX 153894

> Chrusotoxos now
> 
> > 1. Why didn't Dumbledore tell her (McG) about Horcruxes? 
> > Horcruxes are the key to destroy LV. Nobody knows about them, not
> > even DE, except for one RAB <snip> and a fat teacher who 
> > doesn't want to remember and has no proof. If LV knew that 
> > DD was pursuing that line of thought, he would undoubtedly
> > protect himself in another way. 
> 
> Amiable Dorsai:
> 
> <snip> at least some current DEs know something about Horcruxes
>  --specifically, I think Bellatrix knows that he's made one.
> 
> She was convinced, that Voldy was coming back, <snip> going so 
> far as to torture the Longbottoms in order to discover 
> Vapormort's whereabouts.
> 
> Going further out on a limb, I think the Horcrux she knows about is
> the locket.  Trixie likes to boast.  I've got a feeling she said a
> little too much to her cousin Regulus.  How else would a low-level
> Death Eater like Regulus know such important info?  
> 
> So long as I'm multiplying assumptions, I'm going to guess that
> Trixie--or any other Death Eater--only knows that there is one
> Horcrux, not six.  Why else would RAB believe that destroying one
> Horcrux was sufficient to make Voldemort mortal?
> 
> <editted> (I) guess that Tommy (Riddle) tells his different DEs 
> different things. Lucius knew about the Diary, even if he didn't 
> know it was a Horcrux, for example.
> 
> I wonder what Voldy has told Snape?  I wonder what Snape has 
deduced?
> 
aussie:
Roll call who knows about LV Horcruxes:-

- LV (best authority)
- DD (deceased)
- Harry, Ron, Hermione
- RAB (deceased?)
- Bellatrix (suggested)
- Slughorn (knows the target number of Horcruxes)
- Snape (how much has he been told or guessed after curing DD?)
- LV's Horcrux teacher (see below) Walburga? Drumstrang?

Another post (153881) asks if teaching of Horcruxes was banned 
before or after Riddle was at Hogwarts. It says it was banned at 
least 12 years before DD became Headmaster. That makes it banned in 
1945 or earlier. 

Interesting! That was about when DD defeated Grindalwald! Was the 
defeat brought about by destroying a Horcrux Grindalwald made?

Tom was in Hogwarts at that time, but it may have been freshly 
banned just before Tom's course taught it. So we are still left 
with, who taught Tom about "How To Make It"?

Again, McGonagall was 2 years ahead of Tom. Her year may have been 
taught Horcruxes in greater detail.

Others we have heard of around McG's time were Neville's Grandma (or 
how would McG know she failed Charms [OOTP]).

Also, Sirius and Regulus's mother, Walburga Black (1925-1985) 
according to Lexicon. If the future Mrs Black helped Tom, that would 
help explain why Bellatrix and RAB were considered inside knowledge 
enough for them to know about LV's Horcrux. (Alphard was her younger 
brother - another Riddle contempory? He was the one that was removed 
from the Black Family Tree for giving money to Sirius and also a 
suggested RAB)

Of course, Tom did travel extensively to Darker Wizarding areas of 
Europe. He could have learned in Drumstrang or similar. (A Horcrux 
doesn't need to be made directly after a killing, but can wait till 
a suitable vessel can be found. Otherwise, the Ring on Tom's finger 
in Slughorn's memory would have been a waste of a good soul tearing.)

> Chrusotoxos 
> > If LV knew that DD was pursuing that line of thought, he would 
> > undoubtedly protect himself in another way. 

aussie:
And don't forget LV is the best authority on his Horcruxes. Once 
Harry and friends destroy another one or two. LV may travel to the 
resting places of the last ones to ensure they are safe. He may 
travel wreaklessly if he is suprised that the Cave and Ring are 
already gone. 

Then we only need to have someone know how to follow him. Is that 
why Snape went back to LV?