Swami Agamananda (1896-1961), son of Parameswaran Namboothiri and Lakshmidevi, was born at Puthumana Illam, near Chavara, Kollam district. His premonked name was Krishnan Nambiathiri. After his higher studies, he joined Sri Ramakrishna Mission in 1925 and received initiation from swami Nirmalananda in 1928. He was a great scholar in Sanskrit with MA degree from the Presidency College, Madras. Swami Agamananda was a noted preacher of Vedanta, and was equally noted for the practice of its doctrine. Swami Agamananda’s personality had many facets that of a social activist, religious reformer, secularist thinker, propagandist of the teachings of Vivekananda, educationalist, writer and a great orator. His writings, eloquent speeches and cultural activities have contributed a great deal to the process of social mobility and modernization of Kerala. Swami Agamananda was a contributor of articles to every newspaper and periodicals in his time. They deal with a variety of subjects like the importance of Sanskrit study, the ideals of education, the need for religious instructions in schools, the proper organization of Hindu institutions, social equality, religious harmony, the importance of Sankaracharya and Sri Ramakrishna and their works,teachings of Vivekananda and variety of other themes which are too many to mention here. Scholarship of Agamananda can be seen in the lectures included in the four volumes of the book, Virwani. 

He participated in the famous two satyagrahas which was marked as the turning points of the history of modern Kerala. The first unanimous struggle to wipe out untouchability that succeeded in the whole of India was the Vaikom Satyagraha in 1925. Agamananda was one of the leaders of the satyagraha. In Guruvayur satyagraha, swami Agamananda was one among the leaders who strictly argued for the egalitarian society. He delivered many speeches all over Kerala to vindicate the emergency of the temple entry. A K Gopalan, the main leader of the satyagraha clearly mentions the role of Agamananda and his speeches on temple entry. 
He selected Kalady as the centre of his socio cultural activities. Agamananda was the founder of Kalady Advaita Ashram, Brahmanandodayam School, Vocational training centre, Tribal Hostel, Dispensary, Sri Sankara Collage and other institutions which contributed a great deal to the modernization of Kerala society.