<Tr> <Td> </Td> <Td> Renamed Tamil Nadu </Td> <Td> 1969 </Td> </Tr> <Tr> <Td_colspan="3"> States of India since 1947 </Td> </Tr> <P> Madras State was a state in the Republic of India . At the time of its formation in 1950, it included the whole of present - day Tamil Nadu, Coastal Andhra, Rayalaseema, the Malabar region of North Kerala, and Bellary, South Canara and Udupi districts of Karnataka . Coastal Andhra and Rayalaseema were separated to form Andhra State in 1953, while South Canara and Bellary districts were merged with Mysore State, and Malabar District with the State of Travancore - Cochin to form Kerala in 1956 . On January 14, 1969, Madras State was renamed to Tamil Nadu, meaning "Tamil country". </P> <P> After Indian Independence, the Madras Presidency became the Madras Province on 15 August 1947 . On 26 January 1950 it was formed as Madras State by the Government of India . As a result of the 1956 States Reorganisation Act, the state's boundaries were re-organised following linguistic lines . The state was finally renamed as Tamil Nadu on 14 January 1969 by C.N. Annadurai Chief Minister From DMK . </P>

In which year madras state was renamed as tamil nadu