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Rao Bahadur T. Rattinasami Nadar was the founder of Nadar Mahajana Sangam. He founded the organisation with a number of leaders from Nadar community under the presidency of his uncle in 1910.
Rattinasami Nadar died one year after the founding of the Sangam.
References
Lucy Carroll (Feb 1978). "Colonial Perceptions of Indian Society and the Emergence of Caste(s) Associations". The Journal of Asian Studies. 37 (2): 234–235. doi:10.2307/2054164.