Did Snape Try to Warn James at GH? (Re: Here is an interesting Snape one)

[vmonte]

No: HPFGUIDX 120639


Potioncat wrote: According to PoA, in the Shrieking Shack, Black 
doesn't know Snape is a teacher at Hogwarts and according to GoF, 
Black never suspected Snape of working for LV. It appears that Black 
and Snape had no contact after graduating from Hogwarts. That would 
also mean that Black didn't know Snape suspected him of betraying the 
Potters. Nor did he know that Snape warned the Potters (or at least 
DD) about an attack.

But based on the comment Snape made in the Shrieking Shack, about
James being too arrogant to believe Black would betray him, Snape
had told either James or DD that Black had betrayed the Potters.

vmonte responds:

Didn't everyone in the WW believe that Sirius was the one that 
betrayed the Potters because Peter framed him for the job? Snape's 
comments in the Shrieking Shack could be based on what was common 
(although incorrect) knowledge in the WW. Did Snape specifically warn 
Dumbledore about Sirius or about an attack by Voldemort? (I'm not 
remembering the facts now.)

vivian