Aldamir lived from 1490 - 1540, and was the twenty-third King of Gondor and the second son of Eldacar. His eldest brother was killed in the war that temporarly deposed his father from the throne of Gondor during the Kin-Strife, and so Aldamir came to rule after his father.

Aldamir's reign was marked by war with the southern lands. He was slain in those wars and succeeded by his son Hyarmendacil II, who avenged his father's death by conquering the Haradrim.
Encyclopedia entry originally written by ArwenLegolas