Did Grindelwald create a Horcrux?

[jmwcfo]

No: HPFGUIDX 171103

> > Cassy:
> > I'm wondering if we know (or have a good idea) that Grindelwald 
created a
> > horcrux...
> > someone mentioned on here that one other wizard has created 
one... did JKR
> > say that
> > someone other than VD had created one? If so, I think the 
assumption that
> > it was
> > Grindelwald would be correct.
> >

> 
> Cassy:
> I'm fairly sure that cannon does NOT mention any Grindewald 
horcruxes, or
> actually anything about Grindewald, save the fact that Dumbledore 
defeted
> him. Well, Slughorn was talking about how horcruxes are usually 
created, so,
> naturally, *someone* had to create them before, but we don't know 
who
> exactly. It could have been, say, Salazar.


JW:
In the cemetery scene, LV says words to the effect that he "has gone 
FURTHER than any other wizard has in achieving immortality."  DD's 
interprestation is that LV is the first to create MULTIPLE 
horcruxes.  I have a vague recollection that JKR has said that 
Grindelwald did indeed create a single horcrux.  Presumably, either 
DD knew of this and destroyed it to defeat G, or else the existence 
of the horcrux did not prevent DD from defeating G.

Please note that DD DEFEATED G.  I assume this is different from 
KILLING him.  So what ever happened to him?