Lupin vs Sirius (was Lupin's character..)

[Trina]

No: HPFGUIDX 19315

Perhaps Lupin is referred to as Lupin and Sirius as Sirius because 
the children had Lupin as a professor. Sirius has never been a 
professor and, as Harry's godfather, has more of a personal 
relationship with them.  Lupin is more reserved, probably as a 
combination of being a werewolf and the fact he is their teacher.  
Since he is no longer their teacher, they might possibly be allowed 
to call him Lupin, but do they feel comfortable with that?  C'mon, 
can you imagine calling your eighth grade teacher by his/her first 
name, even after you're no longer a student?  

Just my 2 knuts

Trina, free for the summer!