Sriman Nathamunigal and Sri Alavandar, the two great acharyas who have been pillars to Srivaishnava
sampradayam, took their avatara at Kattumannar koil, which is 25 kms from Chidambaram in Cuddalore district of
Tamil nadu, South India.
Kattumannarkoil(situated on the banks of the vast Veeranam Lake) hallowed by the birth of these Acharyas is the only place with magnificent temples dedicated to Sriman Nathamunigal and Sri Alavandar.
Sriman Nathamunigal and Sri Alavandar were the pioneering and foremost Acharyas of Srivaishnavism.
Moolavar: Sri Veeranarayana Perumal with Sri Devi Boodhevi
Nitya Utsavar: Kattum mannanar (Sundragopalan) with Ubaya Nachiyars
Utsavar: Sri Rajagopalan, Rukmani sathyabama
Prarthanai Perumal : Shenbaga mannanar with Ubaya Nachiyars
Thayaar Moolavar: Maragathavalli Thayaar
Utsavar: Sengamalavalli thayaar (Hemabja Naayaki)
In addition to Sri Veeranarayana Perumal temple, Kattumannarkoil has a temple for Lord Shiva at Udayargudi, which is 'Arulmegu Sri Anandeeswarar Aalayam'.