John Langdon (typographer) Langdon is known mostly through his association with Dan Brown, and the novels "Angels & Demons", "The Da Vinci Code," "The Lost Symbol, Inferno, and Origin". The protagonist of these novels was named Robert Langdon as a tribute to John Langdon, and he will continue to be so for his next 12 books, an estimate given by Dan Brown himself. Langdon is now a professor of typography and corporate identity at Drexel University in Philadelphia. He continues to do work on ambigrams, as well and fine art works that incorporate language, type, and philosophy. Langdon credits his paternal grandparents for
Marcus Corvinus (fictional character) Marcus Corvinus (fictional character) Marcus Valerius Messala Corvinus is a fictional character in a series of historical detective novels by the Scottish author David Wishart. Corvinus (he goes by his "cognomen") is of a noble Roman family, living in the reign of the Emperor Tiberius. He has turned his back on the "cursus honorum", preferring a quiet private life with his wife, Rufia Perilla, the scholarly, beautiful stepdaughter of the poet Ovid. Corvinus' main activity is solving mysteries and crimes. He met his wife when she contacted him to investigate the circumstances surrounding the exile and death of her stepfather,