Early on, this man wrote 
Early on, this man wrote a biography of the politician Philopoemen, who was a friend to his father Lycortas, and whose ashes this man reportedly carried home after his death. This man, who also wrote a lost treatise on battle tactics, was taken prisoner after he led the cavalry of the Achaean League on a failed diplomatic mission, but unlike his compatriots, he was allowed to go free. After that, he became a tutor to the sons of the general Lucius Aemilius Paulus, including Scipio Africanus, whom he followed to witness the destruction of Carthage. This figure, born in Megalopolis, become famous for creating what he called a "pragmatic history" which  describes events like the Battle of Cynoscephalae and the razing of Corinth. FTP, name this historian born around 200 BC who wrote the forty-book Histories on the rise of the Roman empire.  
Early on, this man wrote a biography of the politician Philopoemen, who was a friend to his father Lycortas, and whose ashes this man reportedly carried home after his death.
Polybius 