Multiple pastiches and other works outside of Doyle's stories purport to provide additional information about Moriarty's background. John F. Bowers, a lecturer in mathematics at the University of Leeds, wrote a tongue-in-cheek article in 1989 in which he assesses Moriarty's contributions to mathematics and gives a detailed description of Moriarty's background, including a statement that Moriarty was born in Ireland. The 2005 pastiche novel "" also reports that Moriarty was born in Ireland, and states that he was employed as a professor by Durham University. According to the 2020 audio drama "Sherlock Holmes: The Voice of Treason", written by George Mann and Cavan Scott, Moriarty was a professor at Stonyhurst College (where Arthur Conan Doyle was educated).