St. Januarius, born in the 2nd century A.D., was the Bishop of Naples and is a saint of both the Catholic and Eastern Orthodox Churches. Little is known about St. Januarius's life, other than that he was the Bishop of Naples. St. Januarius was martyred in 305 A.D. St. Januarius is most famous for his relic, a small amount of dried blood, which liquefies in celebrations at Naples's cathedral. According to tradition, St. Januarius became a priest at only 15, and a bishop at the age of 20. While visiting his friend who was in jail for being Christian, St. Januarius was also arrested. St. Januarius was among a group of Christians thrown to wild bears in the Flavian Amphitheater.