Pope_Eleutherius--Nikolaus_Gross

Pope Eleutherius (Greek: Ελευθέριος; died 24 May 189), also known as Eleutherus (Greek: Ελεύθερος), was the bishop of Rome from c. 174 to his death. His pontificate is alternatively dated to 171-185 or 177-193. He is venerated as a saint in the Catholic Church.
He is linked to a number of legends, one of them credited him with receiving a letter from "Lucius, King of Britain", but which is now generally considered to be a forgery.