=Co´non.= A famous general of Athens, son of Timotheus. He was made governor of all the islands of the Athenians, and was defeated in a naval battle by Lysander. He defeated the Spartans near Cnidos, when Pisander, the enemy's admiral, was killed. He died in prison B.C. 393. =Constan´tia.= A granddaughter of the great Constantine, married the Emperor Gratian. =Constanti´nus=, surnamed the Great from the greatness of his exploits, was son of Constantius. It is said that as he was going to fight against Maxentius, one of his rivals, he saw a cross in the sky with the inscription, _In hoc vince_. From this he became a convert to Christianity, ever after adopting a cross for his standard. He founded a city where old Byzantium formerly stood, and called it Constantinopolis. There he kept his court, and made it the rival of Rome in population and magnificence. He died A.D. 337, after a reign of thirty-one years of the greatest glory. =Constan´tius Chlo´rus=, son of Eutropius, and father of the great Constantine. He obtained victories in Britain and Germany. He became the colleague of Galerius on the abdication of Dioclesian, and died A.D. 306, bearing the reputation of being brave, humane, and benevolent. =Con´sul.= A magistrate at Rome with real authority for the space of a year. There were two consuls, who were annually chosen in the Campus Martius. The first two were L. Jun. Brutus and L. Tarquinius Collatinus. =Corin´na.= A celebrated woman of Thebes, whose father was Archelodorus. It is said that she obtained a poetical prize five times against the competitorship of Pindar. =Coriola´nus.= The surname of C. Martius, from his victory over Corioli. After a number of military exploits, and many services to his country, he was refused the consulship. He was banished, and went to the Volsci, where he met with a gracious reception from Tullus Aufidius, whom he advised to make war against Rome, marching with the Volsci as general. His approach alarmed the Romans, who sent his mother and his wife to meet him and appease his resentment against his countrymen, which with difficulty they succeeded in doing. =Corne´lia.= A daughter of Scipio Africanus, famous for her learning and virtues, and as being the mother of the Gracchi, Tiberius and Caius Gracchus. Her husband was T. Sempronius Gracchus. =Cras´sus, M. Licin´ius.= A celebrated Roman, who by educating slaves and selling them, became very wealthy. He was made consul with Pompey, and was afterwards censor, and formed one of the first triumvirate, his associates in it being Pompey and Cæsar. In the hope of enlarging his possessions he left Rome, crossed the Euphrates, and hastened to make himself master of Parthia. He was met by Surena, the Parthian general, and in the battle which ensued 20,000 of the Romans were killed and 10,000 made prisoners. Crassus surrendered, and was put to death B.C. 53.