Thanks! Of course, it is possible that the changes made to the translation of Regulus Black's name to fit that of the initials in other languages may be a huge red herring...by now Jo knows that no matter what she does, even the smallest clues will be examined and reexamined thousands of times, and that any slightly obvious clue will be found out within a few weeks.
Is it possible that JKRowling is devious enough to investigate the spelling and initials of Regulus Black in other languages, simply to create a very long-researched red herring for us?
Not that I think that is so...I do believe Regulus is RAB, but it would still be one of the most well-though-out red herring hoaxes of the entire series.