Saint Cassian of Tangier (or of Tangiers or of Tingis) was a Christian saint of the 3rd century. He is traditionally said to have been beheaded on 3 December, AD 298, during the reign of Diocletian. The Passion of Saint Cassian is appended to that of Saint Marcellus of Tangier. It is not considered reliable by some modern scholars. Saint Cassian of Tangier is the martyr mentioned by St. Prudentius (born 348) in his hymn Liber Peristephanon (De Coronis Martyrum) (Carmen IV, 45-48 ): "Ingeret Tingis sua Cassianum,festa Massylum monumenta regum,qui cinis gentes domitas coegit.ad iuga Christi."