Cornelius Nepos
According to Cato's biographer Cornelius Nepos, the "Origins" consisted of seven books. Book I was the history of the founding and kings of Rome. Books II and III covered the origins of major Italian cities and gave the work its title. The last four books dealt with the Roman Republic, its wars, and its growing power, focused on the period between the onset of the First Punic War up to 149BC.