User blog comment:FairyRaven/Fairy Tail Chapter 391: Gray vs. Silver, Review and Commentary/@comment-24784846-20140704210129/@comment-85.221.190.231-20140705075609

It wouldn't feel right for me if he was real Silver, I mean it's kind of cruel to do such a massive mindfuck to your own child, and there was no indication that his relationship with Gray was abusive like Minerva-Jiemma.

Still a possibility though.