Ezhuthachan (caste)
Ezhuthachan(, , '), also known as Kadupattan(, , ') is a caste native to the Indian state of Kerala. It is classified as an Other Backward Class by the Government of India under its system of positive discrimination.
Azhvanchery Thamprakkal
The Thamprakkals were great patrons of mathematics and astronomy. In the famous work "Brahmandapuranam", of poet Thunchath Ezhuthachan, Azhvanchery Thamprakkals had been mentioned with the title "Netranarayanan".