"Okay, from what Wikipedia has to tell us, Spectre had no name in the silver age, And Neil Gaiman suggested in his works that His name was Raguel. this was however retconned in the modern age spectre comic, where his name was stated to be Aztar, and was an angel who sided with Lucifer in the rebellion, but later repented.Which still doesn't explain where "Raphael" comes from.
aztek the lost said:
"oh, I just learned of a Neil Gaiman comic "Murder Mysteries" where there is an angel known as "Raguel" who is described as "the Vengeance of the Lord" and I was wondering if he was supposed to be the Spectre or not?
Also, I believe Raguel is the name given to the angel of vengeance in Book of Magic.