Parameshwara Menon, known as Dharmatheerthar, was an individual who embraced asceticism after experiencing many setbacks in his life. Guru entrusted Dharmatheerthar with the task of preparing the rules for the ascetic organization named 'Dharma Sangam'. However, Dharmatheerthar later left Sivagiri. He converted from Hinduism to Christianity and adopted the name John Dharmatheerthar. Despite embracing Christianity, he continued to adhere to Guru's ideals. He also started a magazine named ‘Dharma’ to propagate Guru's messages. His work ‘Prophet of Peace’further contributed to bringing global recognition to Guru’s teachings.
Narayanatheertha Swami was a devout disciple of Narayana Guru. He worked closely with the people at the grassroots level to propagate Guru's ideals. His early name was Narayana Das. Brahmavidya Mandiram in Sivagiri was established under his supervision.
Ananda Shenoy, born into a Brahmin community in Thalassery, is known by the name Anandatheertha Swami. During his student days, Guru's messages greatly influenced the intelligent youth. In 1928, Guru ordained him as a Sanyasi at Sivagiri. Guru gave him the name ‘Anandatheerthar’ and accepted him as an inmate of the ashram.
Anandatheertha Swami was the first president of the Sree Narayana Dharma Sangam Trust. He helped many Dalit disciples in Payyannur to get educated and secure high-ranking government jobs. He was an ideal disciple who devoted his entire life to propagating Guru's philosophy.
Ernest Kirk was a foreigner who wandered through various spiritual centers in India, seeking the essence of Indian culture, and found Sree Narayana Guru to be his Guru. It was Nataraja Guru and Dharmatheerthar Swami who helped him communicate with the Guru.
As per Guru’s wishes, Kirk formulated the project ‘Sivagiri Free Industrial and Agricultural Gurukulam’ under the Sivagiri Mutt. He also attended the first inter-caste marriage held in Sivagiri with Guru's blessings. Later, after Guru's Samadhi, he returned from Sivagiri and established Sree Narayana Ashram in Coimbatore. He was able to bring Guru's ideals to a wider audience through the magazine ‘Life’.