description St Mary's Pro-Cathedral Overview
St Mary's Pro-Cathedral is a Roman Catholic church on Marlborough Street in Dublin, Ireland. The present neoclassical building was commissioned after Archbishop John Thomas Troy acquired the site in 1803 and was dedicated by Archbishop Daniel Murray on 14 November 1825. For most of its history it served as the pro-cathedral, a temporary cathedral church for the Catholic Archdiocese of Dublin. In November 2025, Pope Leo XIV designated it the official Catholic cathedral of Dublin, while the historic name St Mary's Pro-Cathedral remains widely used.
help St Mary's Pro-Cathedral FAQ
Where is St Mary's Pro-Cathedral?
St Mary's Pro-Cathedral is on Marlborough Street in Dublin, Ireland. It is a Roman Catholic church serving as the pro-cathedral of the Archdiocese of Dublin.
When was St Mary's Pro-Cathedral dedicated?
The building was dedicated by Archbishop Daniel Murray on 14 November 1825. Archbishop John Thomas Troy had commissioned it after acquiring the site in 1803.
What architectural style is St Mary's Pro-Cathedral?
St Mary's Pro-Cathedral is a neoclassical church. Its design reflects the formal classical style used for major Catholic civic buildings in Dublin during the early nineteenth century.
Why is it called a pro-cathedral instead of a cathedral?
A pro-cathedral serves as the principal church of a Catholic archdiocese when there is no designated cathedral church in the usual sense. St Mary's has held that role in Dublin since its dedication in 1825.
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