His real name is Etan Bayard, but he prefers his nickname Singe. He is from Aundair, but joined the Frostbrand company of the Blademarks Guild, under Robrand d'Deneith's command, at a very young age. He specializes in both fire magic and swordmanship. He was with his company in Narath when the city was massacred by attacking soldiers.
Source: The Dragon Below Trilogy, p. Throughout all three books