Saint Denis (also called Dionysius, Dennis, or Denys) is a Christian martyr and saint. In the third century, he was Bishop of Paris. He was martyred in connection with the Decian persecution of Christians, shortly after A.D. 250. After his head was chopped off, Denis is said to have picked it up and walked ten kilometres (six miles), preaching a sermon the entire way, making him one of many cephalophores in hagiology. He is venerated in the Roman Catholic Church as patron of Paris, France and as one of the Fourteen Holy Helpers. The medieval and modern French name "Denis" derives from the ancient name Dionysius.

Gregory of Tours states that Denis was bishop of the Parisii and was martyred by being beheaded by a sword. The earliest document giving an account of his life and martyrdom, the "Passio SS. Dionysii Rustici et Eleutherii" dates from c. 600, is mistakenly attributed to the poet Venantius Fortunatus, and is legendary. Nevertheless, it appears from the Passio that Denis was sent from Italy to convert Gaul in the third century, forging a link with the "apostles to the Gauls" reputed to have been sent out under the direction of Pope Fabian. This was after the persecutions under Emperor Decius had all but dissolved the small Christian community at Lutetia. Denis, with his inseparable companions Rusticus and Eleutherius, who were martyred with him, settled on the Île de la Cité in the River Seine. Roman Paris lay on the higher ground of the Left Bank, away from the river.

Denis Menochet (born 1977 in Enghien-les-Bains, Val-d'Oise) is a French film and television actor. Menochet is perhaps best known to an international audience for his role as Perrier LaPadite, a French dairy farmer interrogated by the Nazis for harboring Jews, in the 2009 Quentin Tarantino film, Inglourious Basterds.

Elizabeth Weitzman, a film critic for the New York Daily News, praised Menochet's work opposite Christoph Waltz in the opening scene of Inglorious Basterds. Weitzman wrote in August 2009, "The terrific opening, for example, does feature a hailstorm of bullets. What you'll remember best, though, is the haunted silence of actor Denis Menochet, playing a French farmer accused of harboring Jews."