Eris was a Greek goddess during Earths early history. She was the goddess of strife and competitiveness, best known for her intervention in causing the Trojan War with her Golden Apple of Discord.
In the 2280s, her file was active in the Starfleet library. (TOS video game: Starfleet Academy: Strategic Command)
- Curiously her file seems to have no use or reason, the game having been created nine years before the planet Eris was named after her, in 2006.