 The only information available on Porus and his kingdom is from Greek sources.The Indian sources do not mention him, although modern scholars have conjectured that he may have been a ruler of the Purus, a tribe known to have inhabited north-western India since the Vedic period.Some scholars, such as H. C. Seth, have attempted to identify Porus with Parvataka, a king mentioned in the Sanskrit play "Mudrarakshasa", the Jain text "Parishishtaparvan", and some other historical sources.