The Azhvanchery Thamprakkal or Azhvanchery Samrat is the title of the senior-most male member of the Brahmin (Namboothiri) feudal lords of Oriparambil Mana in Guruvayur and Azhvanchery Mana in Athavanad, present-day Malappuram district, Kerala state, South India. The Azhvanchery Thamprakkal owned a bulk of land in Athavanad: The name Athavanad is derived from them: Azhvanchery Thamprakkal vazhum Nad. The Azhvanchery Thamprakkal is often considered as the supreme religious head of the Namboodiri Brahmins of Kerala and for every Raja to be formally crowned, his blessings were required. The ancestral home of the Azhvanchery Thamprakkal, who is even today held in high esteem and religious sanctity, is in Athavanad. Azhvanchery Thamprakkal were a great patron of mathematics and astronomy. In the famous Brahmandapuranam by poet Thunchath Ezhuthachan, Azhvanchery Thamprakkal had been mentioned as Netranarayanan. Thunchath Ezhuthachan wrote that he composed Brahmandapuranam under the instruction of the Azhvanchery Thamprakkal.