From Ardrana

Ilmarian is a Human thief, originally from the city of Semmarch. Up until the withdrawal of Hanaellan from the White Alliance, Ilmarian served as Guildmaster of the Thieves' Guild of Semmarch. However, he was imprisoned by Captain Strickham along with others who resisted Duke Mirdael's edicts. He escaped from prison shortly thereafter, and he is generally believed to be hiding somewhere south of the city with the Semmarch Resistance.