Joshua Gardner may be a sex offender, but he’s a creative one. Last year the 22-year-old visited Minnesota’s Stillwater Area High School three times, claiming to be Caspian James Crichton-Stuart IV, the Fifth Duke of Cleveland. He spoke in an English accent and insisted that students, staff and even the principal call him “your grace.”

Student journalists caught on when he misspelled the name of his “castle,” and they soon discovered Gardner was on probation after having sex with a 14-year-old girl in 2002. He now faces up to 21 months in prison.