The earliest documentation on the Pallavas is the three copper-plate grants, now referred to as the "Mayidavolu", "Hirehadagali" and the "British Museum" plates (Durga Prasad, 1988) belonging to Skandavarman I and written in Prakrit. Skandavarman appears to have been the first great ruler of the early Pallavas, though there are references to other early Pallavas who were probably predecessors of Skandavarman. Skandavarman extended his dominions from the Krishna in the north to the Pennar in the south and to the Bellary district in the West. He performed the "Aswamedha" and other Vedic sacrifices and bore the title of "Supreme King of Kings devoted to dharma".