User blog comment:FairyRaven/Fairy Tail Chapter 344: Wizards vs. Hunters, Review and Commentary/@comment-203.87.139.100-20130719095314/@comment-7418318-20130719110816

My guess is that it's someone connected to Ul or Ultear.

If it was either of them who froze the village I'm sure Gray would have recognized it, rather than just being vaguely reminded of someone.