The Sapientem look alot like elves, but are wiser and purer, also they have more of a glow, and majestic look. One Sapientem named Melkin joined Milcoth, and they constructed the first great dark realm.
The Great Tree of Verda is also a very important landmark to them, because Verda's spirit lies within it.
A Sapientem named Melrona marries a man named Barithion, which later started the long line of Chosen men, becasue they were part man and part Sapientem. Dorian was the last in line in the Chosen men.