Patronus

[Geoff]

No: HPFGUIDX 190462

--- In HPforGrownups at yahoogroups.com, "SteveE" <winterfell7 at ...> wrote:

Steve E:
 > You're right Geoff, I was thinking of James's Animagus form, not the form that his patronus manifested itself as.  It is interesting, however, that Harry's patronus animal was the very same animal that his father turned into as an animagus. I can't remember if Harry knew of James's animagus form being a stag when he first cast his Patronus spell or not. 

Geoff:
I think, looking at the following quote from canon, that the answer is "No".

'(Lupin speaking) "I doubt whether any Hogwarts students ever found out 
more about the Hogwarts grounds and Hogsmeade than we did... And that's 
how we came to write the Marauder's Map and sign it with our nicknames. 
Sirius is Padfoot. Peter is Wormtail. James was Prongs."

"What sort of animal-?" Harry began but Hermione cut across him.
(POA "Moony, Wormtail, Padfoot and Prongs" p.260 UK edition)

I'm prepared to put money on Harry's question being about his father's form.
It is unfinished and I don't think there was another opportunity for Harry 
to ask again before the confrontation with the Dementors when he realised
what his form probably was. The matter was confirmed in his final 
conversation with Lupin:

'"Yes, your father was always a stag when he transformed," he (Lupin) said.
"You guessed right.. that's why we called him Prongs."'
(POA "Owl Post Again" p.309 UK edition)