Chapter Discussion: Prisoner of Azkaban Ch 22: Owl Post Again

[nirupama76]

No: HPFGUIDX 191249

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> 7. How did Dumbledore know James's nickname was Prongs? Did he know about the Marauder's Map?
> 

Niru:

I don't think Dumbledore knew about the Marauder's map. When Dumbledore says to Harry that "Prongs rode again", he is talking to Harry on the morning following the events of the time turner and Sirius escaping on Buckbeak. By this time, Dumbledore has already spoken to Sirius on the previous night when Snape brought him into the castle. And Sirius told Dumbledore everything. I'm assuming this includes the story of James, himself and Peter being Animagi. Dumbledore has also spoken to Lupin by the time he mentions Prongs to Harry because Lupin  resigns first thing in the morning. Presumably Lupin has also made a full confession. I always assumed that this was how Dumbledore knew about James being called Prongs. Also Dumbledore saw Harry's Patronus at the Quidditch match against Ravenclaw. He wouldn't have known that the stag actually represented James's animagus form though until Sirius/Lupin told him. 

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