Trevayne was an individual who was a member of the family of the Sith Lord Vilia Calimondra. In 1032 BBY, Calimondra's grandson Odion seized control of the Helm of Ieldis, a powerful Sith artifact that he planned to use to eliminate his rival Sith Lords. In an attempt to stop him, Calimondra ordered Trevayne and the rest of her family to send forces to Vanahame, a moon where Odion was using the negative emotions of children to power his relic.