Gabrielle Charbonnet an American author who often writes under the pen name Cate Tiernan. Under this name she is best known for the Sweep series, which follows the Wiccan adventures of a cast of high school students. Under her own name, she is mostly known for several children s series, including Princess, American Gold Gymnasts, and Disney Girls. In 2008 she collaborated with bestselling author James Patterson on two young adult novels, "Sundays at Tiffany s" and "Witch & Wizard". Charbonnet has written almost seventy-five books under her own name, various pen names, and as a ghostwriter. She...