Gabrielle Charbonnet, known by her pen name Cate Tiernan, is an acclaimed American author born on July 24, 1961. She has carved a unique niche for herself in the world of literature with a prolific output that spans across different genres.

Writing as Cate Tiernan, she is best known for her Sweep series, which delves into the Wiccan adventures of high school students. These tales have found a home and audience globally, being sold as the Wicca series in the UK, Belgium, The Netherlands, and Australia, and as White Magic (Magie Blanche) in Italy and France. The series' compelling narrative and rich exploration of Wiccan traditions have enthralled readers, cementing Tiernan's reputation as a master storyteller.

Under her real name, Gabrielle Charbonnet, she has also made significant contributions to children's literature, notably through her works in the Princess, American Gold Gymnasts, and Disney Girls series. Her versatility as a writer is evident in her ability to engage younger audiences with stories that are both entertaining and inspiring.

In 2008 and 2009, Charbonnet's talent for storytelling took a collaborative turn as she teamed up with famed author James Patterson to co-author two young adult novels, Sundays at Tiffany's and Witch & Wizard. These collaborations brought together the strengths of both authors, resulting in works that resonated with and captivated a young adult audience.

Currently residing in North Carolina, Charbonnet continues to explore new narratives and themes, enriching the literary world with her imaginative and captivating stories.