Traditional belief of Saint Thomas Christians of Kerala is that Thomas the Apostle landed in or around Kodungallur in the middle of the 1st century and founded Seven Churches, or Ezharapallikal: Kodungallur, Kollam, Niranam, Nilackal (Chayal), Kokkamangalam, Kottakkayal (Paravoor), Palayoor (Chattukulangara) and Thiruvithamcode Arappally – a "half church".
Mar Thoma II died suddenly on April 14, 1686, and he was buried inside Niranam church.
While it was going on Mar Thoma VI died on April 8, 1808 at Niranam and Mar Thoma VII was enthroned as the Malankara Metropolitan.
Niranam Diocese is a diocese of the Malankara Orthodox Syrian Church located at Niranam, Kerala.
The local Christian community in and around Changanachery inherits its faith directly from St. Thomas the Apostle, who formed a Christian community of faithful, centered around Niranam in the 1st century.
The Travancore government confisicated the metropolitan bishop's items and the goods and movable properties of the Niranam Church.
St. Thomas founded churches in different places in Kerala including Kollam, Kodungalloor, Nilakkal, Niranam, etc.
In the earlier days the Christian believers of Kallooppara had to depend on the Niranam Church for the holy mass, funeral ceremonies and other religious rites.