Marcello Francesco Mastrilli was an Italian Jesuit missionary who was martyred in Japan on Mount Unzen during the Tokugawa Shogunate, which had banned Christianity in 1614. After sailing for Japan to find and possibly reconvert the notorious apostate Cristóvão Ferreira, who went to Japan and renounced his faith there, he was arrested as soon as he got off his ship. After three days of torture in the pit of Nagasaki, he was beheaded. A painting of his death, Martyrdom of Saint Marcello Mastrilli (1664), was made by Antonio Maria Vassallo.