This is a Brahmanical False and Fake Story. The Real Vayanattu Kulavan or Thondachan or Vayanattappa(In Kodava People's Genesis Story) is the Adi Divya/Thiyya and one of the Kula Devatha of Thiyyas of Malabar.
Mandataram Sivan enna bagawanu roopam kudumbam onumilaaa Ningal EEE paraina Sivan rudranmar Anu Shivan Enna sangalpatine roopamo kamamo ilaaa However tanx for the history of theyam rare story