Regulus alive? The second Black son and inheritance.

[Amanda]

Apologies if this has been addressed. I did a search and nothing came 
up.

A friend of mine who has just half way through the series made an 
obvious, but over look observation on my part. 

She said that if Regulus Black is indeed really alive - the mysterious 
RAB - how do we explain the fact that Kreature became Harry¡¦s by 
magical inheritance?  

12 Grim could be explained by the fact that Sirius actually left the 
house to Harry. We know that from Dumbledore, but the question of the 
inheritance of Kreature was left up in the air and indeed was used by 
Dumbledore to prove to Harry, and himself, that the magical world 
accepted Harry as the inheritor of the Black estate. How could it have 
done that is Regulus is still alive?

Now I¡¦m a big believe in puppetmaster/DD and am intrigued by what 
DD said to Draco about hiding him and his mother so everyone will 
think they are dead.  The reigning train of though is that DD has done 
brilliant piece of hiding with Regulus, but surly DD can¡¦t alter magical 
law that much.  Hiding a wizard so well that even magical elf 
inheritance laws are fooled.  Aren¡¦t elves among the most powerful of 
magical creatures?  Wouldn¡¦t Kreature be bound to Regulus and not 
Harry?

Cheers, Mandy