Morwenna was a treacherous black squirrel of Greenreach, the handmaiden of the Starwife. Morwenna had been plotting for many years to bring ruin to Greenreach and eventually all the land. On the night she put her plan into action, she gave the frail Starwife the final dose of the poison she had been administering to her in the guise of medicine for several days. Desperate to find the silver acorn so she could unite it with the Starglass and become Starwife herself, Morwenna enlisted the aid of the leader of the bat army, Rohgar, as well as her own, more sinister ally; the High Priest of Hobb.