Catius (masc.) (genitive Catiī) a Roman deity, the protector of boys, whom he made intelligent; a nomen — famously held by, amongst others: Quintus Catius, plebeian aedile in 210 BC and legate of the Roman Republic during the Second Punic War; an Epicurean philosopher (fl. mid-1st C. BC) and author of the works De Rerum Natura, De Summo Bono ...