Peter Stubbe or Peter Stumpp, also known as the Werewolf of Bedburg, was part of a case in Germany where the concepts of witchcraft and lycanthropy were interconnected. 

Research:

• Baillie, Nathan. “Monstrous Lessons: Peter Stumpp, the Werewolf of Bedburg.” University of Saskatchewan Undergraduate Research Journal Volume 9, Issue 2, 2024.
• Baring-Gould, Sabine. “The Book of Were-wolves: Being an Account of a Terrible Superstition.” London. Smith, Elder and Co. Cornhill. 1865. https://archive.org/details/thebookofwerewolvesbarin/
• Barker, Sara. “Time in English Translations of Continental News.” News Networks in Early Modern Europe. Brill. Via JSTOR. https://www.jstor.org/stable/10.1163/j.ctt1w8h1ng.21
• Beck, Melinda. “Before America Had Witch Trials, Europe Had Werewolf Trials.” History. 10/15/2021. https://www.history.com/articles/werewolf-trials-europe-witches
• Crabb, Jon. “Woodcuts and Witches.” The Public Doman Review. 5/4/2017. https://publicdomainreview.org/essay/woodcuts-and-witches/
• Davidson, Jane P. and Bob Canino. “Wolves, Witches, and Werewolves: Lycanthropy and Witchcraft from 1423 to 1700.” Journal of the Fantastic in the Arts, 1990, Vol. 2, No. 4 (8) (1990). Via JSTOR. https://www.jstor.org/stable/43308065
• de Blécourt, Willem. “Monstrous Theories:: Werewolves and the Abuse of History.” Preternature: Critical and Historical Studies on the Preternatural , Vol. 2, No. 2 (2013). Via JSTOR. https://www.jstor.org/stable/10.5325/preternature.2.2.0188
• Dinwiddie, Gerda, trans. “The Execution of Werewolf, Peter Stump: A Translation.” Dana K. Rehn. https://danakrehnblog.wordpress.com/2021/05/22/the-execution-of-werewolf-petter-stump/
• Dinwiddie, Gerda, trans. “Truthful and Frightening Description of the many Sorcerers or Witches: An English Translation.” Dana Rehn. https://danakrehnblog.wordpress.com/2022/01/02/truthful-and-frightening-description-of-the-many-sorcerers-or-witches-an-english-translation/
• Priest, Hannah. “The She-wolves of Julich.” History Today. Vol. 65, Issue 6. June 2015.
• Summers, Montague. “The Werewolf in Lore and Legend.” Dover Publications. 1933. https://archive.org/details/TheWerewolfInLoreAndLegend/page/n273/mode/2up