 The stories about the origin of the Kadathanadu ruling family (Vatakara) are associated with battle of the Eradis with Polanadu.When the Samoothiri swarmed over Polanadu, he exiled a Polarthiri royal princess and she was welcomed in Kolathunadu (Cannanore) – one of the Samoothiri's rivals polities.After the marriage of a Kolathu prince with this princess the Kadathanadu ruling family was born.