Who is swiftpaw?

Swiftpaw died in A Dangerous Path. He and Brightheart were angry at Bluestar for not making them warriors yet, even though she was crazy, so they tried to prove themselves to ThunderClan. There was a pack of dogs invading the territory, so Swiftpaw and Brightheart went to run the pack out. However, Brightheart lost an eye and gained the name Lostface, while Swiftpaw died. Brightheart got her actual warrior name back, though.