Wikipedia
Eubians
The Eubians (also called Traders) refers to the fictional people of the Eubian Concord in the Saga of the Skolian Empire by Catherine Asaro. They are often portrayed as antagonists in those novels, enemy to the rivaling Skolian Empire.
Eubian Concord is an interstellar civilization consisting of several thousand planets, with an economy based on slavery. Named after its founder Eube Qox, the Concord is governed by an emperor, who acts as an absolute ruler. So far all five emperors have been from the House of Qox, direct descendants of Eube Qox, with Eube being the first emperor, followed by Jaibriol I, Ur, Jaibriol II and Jaibriol III.