Mauryan Empire Important Facts: Chandragupta Maurya (321-297 B.C.): Called as Sandrocottus by the Greeks. Finding signs of royalty in him, Chanakya or Vishnu Gupta or Kautilya, brought him up got him educated at Taxila. At the young age of 25, dethroned the last Nanda ruler (Dhanananda) & occupied Pataliputra in 321 B.C. with the help