Earlier time frame before HP was born (also Pottermore)

[Geoff]

No: HPFGUIDX 191328

--- In HPforGrownups at yahoogroups.com, "zanooda2" <zanooda2 at ...> wrote:

Geoff: 
> > Perhaps 5 years? Making this about 1949.
 
zanooda:
 
> According to DD, it was ten years :-). He said ("Lord Voldemort's Request") that ten years passed between LV's visit to Hepzibah Smith (as remembered by Hokey) and his visit to DD at Hogwarts. I don't remember for how long LV worked at Borgin and Burkes, so I can't say what year that was when LV found out about Hepzibah's collection and killed her.

Geoff:
Ah, thanks. I'd  missed that. So that revises my figures to probably the mid- 
or late-1950s.