User blog comment:Calbeius or Urukgoth/A Calbeius Original: The Rise of Guldur part 3/@comment-25754873-20160106155510/@comment-27477735-20160107011057

Yes. But they came back around 500 F.A. The reason they retunred was because evil was rising once again. The Valar literally forced them into returning back to Middle Earth to stop evil from getting higher. This takes place around 1500 F.A.