Raneth
Raneth of Diamond Hearth is a canonical character mentioned in Kingdom of Halta. In the Hundred Kingdoms chronicle he was slain when Yurgen Kaneko and his circle entered the Invisible Fortress during their invasion of Linowa. We really don't know much of anything about the character, except that he almost certainly is not an icewalker - only Fear-Eater, Samea, Yurgen Kaneko and Crimson Antler are canonically described as such.