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.
The rows of hearths were discovered at Atranjikhera and at Ahichchhtra both of which are in western Uttar Pradesh. The excavations show that these hearths were meant for communal feeding or for cooking the food of large families.