Umbar becomes a great fortress of Númenor
Event Type: Military/Strategic
Age: 2nd Age - Rings
Tar-Atanamir takes the sceptre. Rebellion and division of the Númenoreans begins. ...
Umbar is made into a great fortress of Númenor.
The Return of the King, LoTR Appendix B, The Tale of Years: The Second Age
The Numenoreans now make permanent dwellings on the shores of Middle-earth, seeking wealth and dominion; they build many havens and fortresses. The Elf-friends go chiefly to the North-west.... The King's Folk establish lordships in Umbar and Harad and in many other places on the coasts of the Great Lands.
The Peoples of Middle-Earth, HoME Vol 12, Part 1, Ch 6, The Tale of Years of the Second Age
The great cape and land-locked firth of Umbar had been Númenorean land since days of old; but it was a stronghold of the King's Men, who were afterwards called the Black Númenoreans, corrupted by Sauron, and who hated above all the followers of Elendil. After the fall of Sauron their race swiftly dwindled or became merged with the Men of Middle-earth, but they inherited without lessening their hatred of Gondor.
The Return of the King, LoTR Appendix A, Annals of the Kings and Rulers: Gondor and the Heirs of Anárion
added quotes: Elena Tiriel 11Nov05