Messenger Charles Hyacinth Valerga, pro-vicar Apostolic of Quilon died in Tangasseri on 24 December 1864 and was buried in the church.

[5][1] As the old Pro-Cathedral was ageing, a plan for a larger building to accommodate the increasing congregation was put forward.

The old church was demolished and the foundation stone was laid by bishop Joseph G Fernandez in 2000 during the tenure of Monsingor Paul Mullassery.

George Mathew took charge as the parish priest in 2002, taking an active part in the completion of the church in the year 2005.

[citation needed] The new structure was completed at a cost of ₹4,56,00,000 (US$845,000 in 2005) and was consecrated by Cardinal Telesphore Placidus Toppo, the Archbishop of Ranchi, on 3 December 2005, and elevated from pro-cathedral to cathedral.

[citation needed] The remains of Jerome M. Fernandez, the first native Bishop of Quilon, are buried in the prayer crypt below the Cathedral.