Herumor (Q."Dark Lord") of Umbar was a son Númenórean Lord Eldarion of Dor-en-Ernil, who became, along with his brother Fuinur Stormheart, a powerful Lord among the Haradrim who called him Windsword. Herumor served Sauron and the Ringwraith Adûnabêth during the War of the Last Alliance that concluded the Second Age. He campaigned in Ithilien throughout the early stages of the conflict and died in the defense of Barad-dur in S.A. 3441.