Important Socio-Religious Organizations: Organization Founder Atmiya Sabha (1815-19) Raja Ram Mohan Roy Brahmo Sabha (1828) & renamed it Brahmo Samaj Raja Ram Mohan Roy Brahmo Samaj of India Keshav Chandra Sen Sadharan Brahmo Samaj Anand Mohan Bose Tattvabodhini Sabha (1839) Debendra Nath Tagore, also known as ‘Maharshi’. Sangat Sabha (1859) Keshav Chandra Sen Young Bengal