This article is mentioned in Eragon.
This article contains spoilers from Eragon.

Eridor was a mighty male green dragon and one of the many dragons that lived during the days of the Dragon Riders. Eridor was said to be the "king of the wild dragons". He was the successor of Vanilor, possibly his son.

"Eridor" was a name Eragon learned from Brom at his home in Carvahall. Eragon later offered it to his dragon when he was looking for a name for her.