The Author R. Krishnaswamy Iyer, in this biography,  mentions about this Koti Mukteeswarar Temple in this Village Srikanteswarapuram or Kunnuvarankottai or Kunnapatti (as it is now called). This temple was near the point of confluence of the 3 rivers before it was damaged by natural calamities like floods.
The current village was moved 0.5 km away from this point of confluence and new temple for Lord Viswanatha was built, the villagers point out. Locals believe that the idol was brought from Varanasi or Kasi. Can I add this reference in the main article?