[1] Born into an aristocratic landlord Kondaikatti Thondaimandala Vellalar[2][3] family in Uthamapalayam.

He was a practising lawyer before entering politics in 1967 when he joined the Dravida Munnetra Kazhagam (DMK).

Rajan was first elected to the Tamil Nadu Legislative Assembly from Theni in 1967 and was re-elected in 1971.

[6] He was elected from Madurai Central and was the Minister for Hindu Religious and Charitable Endowments in the Government of Tamil Nadu at the time of his death on 20 May 2006 at the age of 74.

Madurai Kamaraj University conferred the Doctor of Law on him (Honoris Causa) in 1997.