When the dynasty of madurai was defeated in war, the surviving royal members migrate to kerala and established the Poonjar dynasty.On the way to kerala , hey carried the idols of Madurai Meenakshi , the deity of the royal fa,ily in their backs. The word Muthuvans comes from '' Muthuku'' which means backs in malayalam and tamil languages. These tribes settled in the forest near Tamil nadu , and come to be known as Muthuvans.