Board Thread:Suggestions forum/@comment-29212138-20170526182111/@comment-29773086-20170526234413

There were no Black Númenóreans left in Umbar just before the War of the Ring. Umbar had been conquered many times, and at one point had been purged of all its inhabitants. The Men of Near Harad had eventually taken it, and while it continued to be contested between the group of Haradrim living there- the Corsairs- and the Gondorians, there were no Black Númenóreans or descendants of Castamir remaining. Case closed.