Kerala Iyers, Pattars or Bhattars, are Tamil Brahmins of the Indian state of Kerala — people who were residents in the Kerala region, and also people who migrated from present day Tamil Nadu in different waves from the time of the Chera dynasty.
Pattars or Bhattars, belonging to the Kerala Iyers community, are Tamil Brahmins from Kerala. They include both native residents of the region and migrants from present-day Tamil Nadu, having moved in different waves since the time of the Chera dynasty.