[1] There are lots of theories as to how Nambudiri Brahmins came to settle in Kerala, the commonly accepted point of view is that they moved in from North India via Tulu Nadu or Karnataka.
Before abolition of the princely-order of government, The Azhvanchery Thamprakkal was considered as the supreme religious head of Kerala Brahmins.
His presence was required for the anointing of the Thachudaya Kaimal of Travancore, the Yogathiripad of Thrissur and the ruling chiefs of South India [6] The Thamprakkals were great patrons of mathematics and astronomy.
The Kerala School of Astronomy and Mathematics flourished between 14th and 16th centuries of Common Era in Tirur-Tirunavaya-Triprangode region on the bank of the river Bharathappuzha.
In the famous work Brahmandapuranam, of poet Thunchath Ezhuthachan, Azhvanchery Thamprakkals had been mentioned with the title "Netranarayanan".
The story according to popular lore is that while returning from the coronation ceremony of Kulashekhara Perumal with the gift of a golden-cow, the Thamprakkal was stopped on the road by Pakkanar, a person of low caste.