|“||Tu m'as trahie Isobel, maintenant tu vas mourir.||„|
|~ Duchess Gertrude tells Isobel she will die in French.|
The Duchess Gertrude was a rival and witch in the early 17th century in the WB Television series Smallville. She appeared as a flashback antagonist in the Season 4 episode "Bound".
Duchess Gertrude was a powerful woman in France and a practitioner of magic. She was obsessed with finding three mythical stones that would supposedly reveal an incredible trove of knowledge when all three were united. The Duchess sent ships to the far ends of the known Earth. But all her agents could discover was a map of a temple in China where one of the stones was supposedly hidden.
However, the map never made it into the hands of Gertrude. In 1604, Countess Margaret Isobel Thoreaux, her arch rival and witch, stole the document and hid it so that she could find the Stones of Power for herself. Enraged the Duchess had the exquisite young sorceress and her companions Brianna Withridge and Madelyn Hibbins captured for practicing witchcraft and sentenced to burn at the stake by Magistrate Wilkins.
As Isobel and her comrades burned, she vowed that when she rose from the dead, she would wipe out all of Gertrude's heirs.
Her descendants, the Teagues, continued the quest for the Stones of Power. After being possessed by her rebellious ancestor, Lana Lang had a strange dream in which she witnesses the execution of Countess Thoreaux and Gertrude yelling angrily at her in French. During the execution, Duchess Gertrude's eyes lit up the same violet color that Isobel's eyes were when she used magic, identifying her as a witch.
Lana awoke abruptly from the dream in shock. The next day, Lana met Gertrude's descendant, Genevieve Teague, and noticed their eerie resemblance. Lana admits to her boyfriend Jason Teague that she met his mother and tells him that she dreamed about Genevieve before she met her. Jason became suspicious hat he was a pawn in his mother's plan.
Genevieve later asked Jason to leave with her, but he confronts her about her orchestration of his and Lana's relationship. Genevieve reveals that she knew of Lana's connection to Isobel Thoreaux and that their ancestors were responsible for burning Isobel at the stake. Jason refused to leave Lana and Genevieve said he was in love with a girl that may kill their entire family. Unknown to either of them, Lana overheard their conversation.
Lionel later revealed the rivalry between Isobel and Gertrude to Lana when she was looking for Jason who was in China searching for the mythic stone.