Chanakya was also known as Kautilya or Vishnugupta. He was the chief minister at the court of king Chandragupta Maurya. He wrote the famous book Arthashastra' and 'Chanakya NITI'.
Bimbisara was the first ruler of Haryanka dynasty of the Magadha Empire with his capital at Rajgirih. His son Ajatshatru imprisoned him to ascend the throne.
Second Mauryan Emperor Bindusara (297-273 B.C) was the son of Chandragupta Maurya (founder of the Maurya Empire). He was also called Amitraghata (the slayer of enemies).