Maha Vidhwan Mu Raghava Iyengar was from Manamadurai in Tamil Nadu and lived in the Ramanathapuram area. He was born on 26 July 1878. He was a Tamil scholar and he conducted research on Tamil History and Literature. Notably he worked on establishing the time periods of the old Tamil Poets. His research was also centered around the Alwars. His father was Sadavadhaanam Muthuswamy Iyengar, a Tamil Poet in the court of Ponnuchami Thevar, the brother of the king ofRamnad, Muthuramalinga Sethupathy. His father wrote a 100 verse Tamil poem on the Vaishnava Saint Manavala Mamuni. He also wrote Nootrettu Thiruppathi Agaval which lists out all the 108 Sri Vaishnava Divya Desams along with Purana Sthalams. Pandithurai Thevar, who was a nobleman from the Royal family of Ramnad, studied Tamil under his father. When he was young, Mu Raghava Iyengar studied Tamil from Pandithurai Thevar. His cousin R. Raghava Iyengar was a Poet Laureate of the Sethu Samasthanam. His grand father, Sri Krishna Iyengar was the deputy chief minister under Sri Muthuramalinga Sethupathi or Sri Baskara Sethupathi, Raja of Ramnad. Sri Krishna Iyengar was also known as Chinna Prathani Sri Krishna Iyengar, while, his colleague, Sri Muthirulappa Pilla was the Periya Prathani.
Work
He worked as the head of the Tamil Research department in Thiruvangoor University between 1944-1951. He also worked as a lecturer in the Loyola College, Chennai. He collaborated with Pandithurai Thevar in promoting Tamil Language. Mu Raghava Iyengar was a leading member of and helped edit the magazine Senthamizh between 1905 and 1910. Mu Raghava Iyengar was appointed to the committee that worked on the Tamil-English lexicon/dictionary. This project started with Rev. J. S. Chandler as the Chief Editor and Mu Raghava Iyengar as the Chief Pundit around 1913. The project eventually finished in 1936 under Prof S. Vaiyapuri Pillai. In 1936, he compiled and published the anthological work of ancient and medieval stand-alone poems under the title Perunthogai. For his scholarly contributions, Mu Raghava Iyengar was granted the title of "Rao Sahib" in 1936 by the government. He had deep interest in the history of Tamil and Tamil Nadu. Working with the archeologist T.N. Gopinatha Rao, he researched the stone writings in the temples of Tamil Nadu. He contributed scholarly treatises to magazines like , கலைமகள், தமிழர் நேசன், ஸ்ரீவாணி விலாசினி, கலைக்கதிர், அமுதசுரபி.
Published books
He wrote Toklaapia Poruladikaara Araichi, a study of ancient Tamil grammar, Tolkappiyam. Other books by him include: