This hag coven was established in Pebble on three farms. Lady Abernathy's farm, Madame Loreen Machezzar's farm, and Miss Diane Withers's farm.
They had Avan Bryson under their control as a thrall that carried their Hag Eye.
It seems they were controlling the town and were preparing to sacrifice it so some weird strawberry monsters. Diane Withers and Loreen Machezzar died on 15 Suntide's Rise, 99 PRH during Slaughter at the strawberry fields. Eileen Abernathy escaped.