Board Thread:General Mod Discussion/@comment-29979363-20161002205446/@comment-26295802-20161002205845

To my memory, Thorongil was the name used by Aragorn Elessar Telcantar, when he served secretly under the steward Ecthelion. Under this name he basically rallied Gondor, and saved it from certain doom by sailing out and destroying the fleets of Umbar with Prince Imrahil. He then dissappeared back into the unknown after the death of Ecthelion, leaving for fear of Denathor's wrath. (Denathor always really hated Telcantar, because his father favored him over his own son. Think Tony Stark/Captain America)

Again, that's all to my memory, and I haven't read it in a shockingly long time.