The Cranberry Public Library, 2525 Rochester Road, will host via Zoom The Witch of the Monongahela presented by Thomas White at 6 p.m. Oct. 20.

In the ancient hills and misty hollows of Fayette County, Pa., generations of locals have passed down stories of a woman with mysterious magical powers.

Named Moll Derry and nicknamed “the Witch of the Monongahela,” her legend has been documented by writers and folklorists for more than 200 years. She is intertwined in many regional tales, such as the Lost Children of the Alleghenies. Author Thomas White separates fact from fiction in the many versions of Moll Derry and recounts Western Pennsylvania’s folk magic history along the way.

White is the university archivist and curator of special collections at Duquesne University. He is also an adjunct lecturer in Duquesne’s History Department and an adjunct professor of history at La Roche College.

Besides the folklore and history of Pennsylvania, his areas of interest include American cultural history and the history of the occult and the supernatural. Online registration for this Zoom event is open now. Register online at www.cranberrylibrary.org or call 724-776-9100 for more information.