Who was Marvolo? (was Re: Book Two Discoveries!)

[macfotuk at yahoo.com]

No: HPFGUIDX 112082

--- In HPforGrownups at yahoogroups.com, "justcarol67" 
<justcarol67 at y...> wrote:

<snip>

Carol responds (about Voldemort's mother) :

> She may have given him both names as a clue to
> his identity--these names are who you are: the son of Tom Riddle, 
the
> grandson of the wizard Marvolo. I'm pretty sure that the middle 
name
> was a clue he followed up on, possibly consulting the library or 
his
> head of house to find out about Marvolo. 

<snip>

Could Marvolo have been (or mentored) Grindenwald perhaps? I'm 
unclear what, if anything, Grindenwald did with/for Voldemort, but I 
know others have had theories of a link since CoS was opened by 
Riddle around the time DD defeated Grindenwald ('50 years ago').