Saint Pantaleon (Greek: Παντελεήμων [Panteleímon], "all-compassionate"), counted in the West among the late-medieval Fourteen Holy Helpers and in the East as one of the Holy Unmercenary Healers, was a martyr of Nicomedia in Bithynia during the Diocletian persecution of 305 AD.Though there is evidence to suggest that a martyr named Pantaleon existed, some consider the stories of his life and death to be purely legendary.