Shiyali Ramamrita Ranganathan 9 August 1892 – 27 September 1972) was a librarian and mathematician from India.His most notable contributions to the field were his five laws of library science and the development of the first major faceted classification system, the colon classification. He is considered to be the father of library science, documentation, and information science in India and is widely known throughout the rest of the world for his fundamental thinking in the field. His birthday is observed every year as the National Librarian Day in India
Ram Mohan Roy 22 May 1772 – 27 September 1833) was an Indian reformer who was one of the founders of the Brahmo Sabha in 1828, the precursor of the Brahmo Samaj, a social-religious reform movement in the Indian subcontinent. He was given the title of Raja by Akbar II, the Mughal emperor. His influence was apparent in the fields of politics, public administration, education and religion. He was known for his efforts to abolish the practices of sati and child marriage.Roy is considered to be the "Father of the Bengal Renaissance" by many historians