I can hear the spinning. Haven't read/seen/have-actually-avoided-like-the-plague Da Vinci Code, but having taken art classes, I know which one John is! And yes, that would be Saint-Just, poor thing.

And yes, David will deny him three times before the emperor crows.

Who else would be there, though? And where There's thirteen places in the picture, and only 4 have been filled...