Gertrude Gillkens
Gertrude Gillkens was a member of The Lunar Grove.
Despite repeated warnings from Granny Honeylocust, Gertrude's carelessness and pride eventually led to her capture by Léopold Dumont and The Unbroken Family.
In an attempt to save herself, Gertrude betrayed the coven and revealed its secrets to Dumont. This betrayal allowed the witch hunters to bypass the coven's protections and launch a devastating attack against The Lunar Grove.
Many witches were killed, Granny Honeylocust's home was destroyed, and the surviving members of the coven were scattered.
Gertrude is remembered as one of the greatest traitors in the history of the coven.