Matsya was one of the sixteen Mahajanapadas mentioned in the Buddhist text Anguttara Nikaya. The founder of the kingdom of the Matsya was Virata. It consisted of the present-day Alwar, Jaipur and Bharatpur.
Sakatayana was a Jain writer of the 9th century A.D.He lived during the reign of Rashtrakuta ruler Amoghavarsha. He was the founder of a new school. His main work was Sabdansusana.