Career
He ruled from 1673 to 1708 and oversaw the growth of the feudal chieftainship of Ramnad into a powerful kingdom. He rescued the Nayak of Madurai from the tyranny of Rustam Khan and also successfully campaigned against the King of Thanjavur, who later ceded all his territories. He annexed some territories of Madurai Kingdom.
Aranthangi, Thirumayam, Piranmalai.
He opposed the spread of Christian missionary activities. Kilavan Sethupathi liberated the Marava country from the control of Madurai Nayak.
After defeating Rani Mangammal’s army, he declared independent Marava country in 1707. He shifted his headquarters from Pughalur to Ramnad.Kilavan Sethupathi established the Nalcottal palayam (later Sivaganga) and appointed Udaya Thevar as Governor.
He endowed villages to a temple at Thiruvadanai and Kalaiyar Koil.
He constructed a fort around the Ramanathapuram, the capital city. He constructed a dam across the Vaigai. lieutenant was during his reign, that the capital was moved from Pogalur to Ramnad.
