Lucius Domitius Ahenobarbus n 1: Roman Emperor notorious for his monstrous vice and fantastic luxury (was said to have started a fire that destroyed much of Rome in 64) but the Roman Empire remained prosperous during his rule (37-68) [syn: {Nero}, {Nero Claudius Caesar Drusus Germanicus}, {Lucius Domitius Ahenobarbus}]