Tsernoth
A necromancer of Iriaebor — and, for now, little more than a name spoken by a dead woman.
According to the banshee Agatha of Conyberry, Tsernoth acquired the spellbook of Bowgentle from her by trade more than a century ago. Whether he still lives (necromancers being famously flexible on that point), whether the book remains in Iriaebor, and what a necromancer wanted with the spellbook of a famously gentle mage — none of this is known.
Sister Garaele is asking her Harper contacts what became of him.