User blog comment:Rassilon of Old/Greg Weisman interview with World's Finest/@comment-4007440-20111008123448

look: http://www.s8.org/gargoyles/askgreg/search.php?qid=13535

Greg revealed some of the people who know about Batman's identity: "Bruce Wayne, Alfred Pennyworth, Dick Grayson, Clark Kent, Princess Diana, Ra's al Ghul and perhaps a small handful of others that I don't feel like revealing right now."