Perambalur (Tamil: பெரம்பலூர் மாவட்டம்) is an administrative district in the state of Tamil Nadu in India. The district headquarters are located at Perambalur. The district occupies an area of 1,752 km² and has a population of 4,93,646 (as of 2001), making it the least populous in the state.

Perambalur district is a centrally located inland district of Tamil Nadu, spread over 3,69,007 ha, which was trifurcated from the erstwhile composite Tiruchirappalli district and was formed on 1 November 1995. The district is bounded by Cuddalore district in the north, Tiruchirappalli district in the south, Thanjavur in the east and Namakkal and Tiruchirappalli districts in the west. The total geographical area of the district is 3,69,007 ha, and net sown area and gross sown area are 2,16,422 ha and 2,37,136 ha, respectively. The net area under irrigation is 71,624 ha.

The district lies in the Southern plateau & hill zone of Agro-climate regional planning with characteristics of semi-arid climate. The soil is predominantly red loamy and black soil. The normal rainfall of the district is 908 mm which is less than 946.9 mm, the normal rainfall of the State. The precipitation during northeast monsoon, southwest monsoon and remaining winter & hot weather period account for 52%, 34% and 14% of annual rainfall, respectively.

Swami Vivekananda (pronounced: IPA: [ʂāmiː biːbeːkānoːnɗoː]  listen (help·info)) (12 January 1863 – 4 July 1902), born Narendra Nath Datta (IPA: [nôreːnd̪roː naːt̪ʰ d̪ôttoː] was the chief disciple of the 19th century saint Ramakrishna and the founder of the Ramakrishna Math and the Ramakrishna Mission. He is considered a key figure in the introduction of Indian philosophies of Vedanta and Yoga to the western world, mainly in America and Europe and is also credited with raising interfaith awareness, bringing Hinduism to the status of a major world religion during the end of the 19th century CE. Vivekananda is considered to be a major force in the revival of Hinduism in modern India. He is perhaps best known for his inspiring speech which began: "Sisters and Brothers of America," through which he introduced Hinduism at the Parliament of the World's Religions in Chicago in 1893.

Swami Vivekananda was born in an aristocratic Bengali Kayastha family of Calcutta on 12 January 1863. Vivekananda's parents influenced his thinking—his father by his rationality and his mother by her religious temperament. From his childhood, he showed an inclination towards spirituality and God realisation. His guru, Ramakrishna, taught him Advaita Vedanta (non-dualism); that all religions are true and that service to man was the most effective worship of God. After the Mahasamadhi of his guru, Vivekananda became a wandering monk, touring the Indian subcontinent and acquiring first-hand knowledge of conditions in India. He later travelled to Chicago and represented India as a delegate in the 1893 Parliament of World Religions. He conducted hundreds of public and private lectures and classes, disseminating Vedanta and Yoga in America, England and Europe. He also established the Vedanta societies in America and England.

Emmanuvel Devendrar (also called Emmanuvel sekaran) was a schedule caste reformer. He also worked in the Indian army as soldier and discontinued the service. He belongs to Devendra kula vellalar caste. He was murdered on 11 September 1957. His postal stamp was released by the government of India in 2010. His death anniversary day is attended by millions of people in Tamilnadu every year.

Emmanuvel devendrar was born on 9th october 1924 to Mr.Vedhanayagam (School Teacher and founder of Devendra kula vellalar sangam,Mudukulathur) and Mrs.Gnanasoundhari Ammal in a village of Sellur, which is located in Mudukulathur Taluk in Ramanathapuram district,Tamil Nadu . He has four children, namely E.Mary Vasantha rani,E.papin vijaya rani,E sundari prabha rani, E.Jansi rani. Emmanuvel sekaran knew 7 languages including Russian language.

At the age of 18 Immanuvel devendrar participated in the Quit India movement and he was imprisoned for three months by the British Government.

In 1945 he joined the Indian army as soldier. He worked in the Indian army discontiuned and he returned to Paramakudi to become a youth congress leader.