Chanakya
He is generally called Chanakya (taken from his father's name "Chanak") but, in his capacity as author of the Arthaśhāstra, is generally referred to as Kautilya derived from his gotra's name "KOTIL"(Kautilya means "of Kotil"). He believed in four ways: Treating with Equality, Enticement,  Punishment or War and Sowing disagreement. The Arthaśhāstra identifies its author by the name Kautilya, except for one verse which refers to him by the name Vishnugupta. One of the earliest Sanskrit literatures to explicitly identify Chanakya with Vishnugupta was Vishnu Sarma's Panchatantra in the 3rd century BC.