Denis of Paris was a third-century Christian bishop who served the community in Lutetia, the Roman predecessor to modern Paris. Born in Roman Italy, he traveled to Gaul to spread the faith, eventually becoming the city's first bishop. He was martyred alongside his companions, Rusticus and Eleutherius, during a period of Roman persecution. He is famously remembered in Christian tradition as a cephalophore, a type of martyr depicted as having carried his own severed head while preaching.