Tal-Elmar was a man living in Agar in the Second Age and was the seventeenth son of Hazad Longbeard. The the dates are not exactly given, Tal-Elmar lived sometime in the mid to late Second Age. His story comprised of the Númenorians coming to Middle Earth. Perhaps these were the Faithful, and Tal-Elmar's diplomacy may have earned him rights into the ranks of Elendil's forces. Or perhaps these were men of Ar-Pharazôn, in which case Tal-Elmar may have had a long battle against the Númenorians and died a hero's death. Given that the story is conjecture--the most probable outcome would be Tal-Elmar's diplomacy allowing him to save Agar and gaining a foothold in the ranks of Elendil's kingdom of later Gondor, thus saving his people and allowing them to be enlightened.