The Pallavas used to rule over a vast area of South India. They had subordinates to oversee the various regions. The Muttaraiyar was a minor chiefly family that acted as subordinates for the Pallavas. Vijalaya belonged to the ancient chiefly family of the Cholas. They were feudatories of the Pallavas. Vijayalaya captured Thanjavur from the Muttaraiyar and this started the rise of the Chola empire.