Masks of the Great One
Dark haired dwarf
Cousin of Lira Anderkin. She married Ivar Devkin. When Ivar wandered into the moors, he was, unbeknownst to her, replaced by a doppelganger. She and this doppelganger had a son.
This doppelganger squandered the Devkin clan wealth then faked his death.
Eventually her son, Bjarne, began to show signs of his doppelganger heritage and wandered into the moors. She hired a group of adventurers to find her son.