In the beginning the catholics who migrated from Trinelvi, Tuticorin and Nagercoil, were scattered and lived separate and not as a catholic community. Mr Rajagani Nadar and Mr Antony Dasan Nadar who came around 1970 initiated the catholic population in Thirukazhukundram area. Mr Rayappan Nadar, Mr Antony Madavadaiyan Nadar, Mr Soosaimuthu Nadar in Mananmadhi came in 1975, Mr Maria Sesu and Mr Antony Nadar came in 1978. Mr Rayappan Nadar, Mr Antony Madavadaiyan Nadar, Maria Sesu followed them. The generosity of a Block Development Officer paved the way for the catholic church, under the Archdiocese of Madras-Mylapore then, to enter Thirukazhukundram as a substation of St Joseph’s Parish (Now Cathedral), Chengalpattu for few months in 1978. The Masses were continued to be held in the house of Mr Joseph Muthusamy and Ms Lilly (parishioners) until the property of 10 cents was bought by Fr P M Joseph and the place was renovated to be used as a church  under the foot of the main hill at Thirukazhukundram. The place was equally shared by the parish and the sisters of Coimbatore Presentation. The desire of the parishioners to have the Annual Feast of Mary Help of Christians (Patroness of the Parish) was fulfilled on 9^th June 1980 and continued thereafter. A property of 41 cents was bought by Fr B Antony (Parish Priest of Oragadam then) at Kothimangalam, Thirukazhukundram, where the Parish Church exists at present. A small church was built by the Archdiocese of Madras-Mylapore for people to have the Mass which was blessed by Rt Rev Lawrence Pius, D.D. (Auxiliary Bishop of Madras-Mylapore then) on 3^rd September 2000. Fr B Antony (Parish Priest of Oragadam then) desired to bifurcate Thirukazhukundram from Oragadam and made it into a separate parish and the Archdiocese of Madras-Mylapore decided to handover the parish to the Salesians.

Fr Bellarmine Fernando, sdb, Provincial of the Salesian Province of Chennai, appointed Fr Augustine Nathan, sdb, as the first Parish Priest of Thirukazhukundram. When the Diocese of Chengalpattu was erected the parish came under the Diocese of Chengalpattu. The present mighty Church was built and blessed by Most Rev Dr Neethinathan, D.D. (Bishop of Chengalpattu Diocese) on 26^th June 2000. Fr Balraj, sdb, Fr Jeffrey Gladstone, sdb, Fr Manayil, sdb, Fr Sathiaseelan, sdb, Fr Amalan, sdb, Fr Kuriakose, sdb, Fr Gnanamani, sdb and Antony Pitchaimuthu, sdb, were the Parish Priests before Fr Samson Raja, sdb, the present parish priest (May 2023 – May 2026). The Parish has St Thomas Church, Echur; Punitha Arokia Annai Aalayam, Pulikundram; Panimaiya Madha Aalayam, Mananmadhi; Paduvai Anthoniar Aalayam, Nerumbur; Lourdumadha Anbiam, Edaiyur as main substations. There are 155 families in all at present.