Bleddyn was once a member of the Seelie Court, but they cast him out. He joined the Unseelie Court. He was the sidhe who challenged Meredith into the last duel before A Kiss of Shadows. Bleddyn was not his true name, but it was a name he accepted. It means wolf or outlaw. He suffered from great rages without cause. Meredith killed him with a gun and since then guns were forbidden inside the Unseelie mound.
Mentioned in A Kiss of Shadows.