Its architect, Edward Welby Pugin, adopted a 14th-century Decorated Gothic style.

The church replaced an earlier chapel, located in King Street, which by the 1850s was deemed insufficient for the growing congregation, and finance was provided by a local industrialist.

[1] Further additions to satisfy a still-growing congregation were made in the mid-20th century, in the form of the cloister and side chapel.

The church was designated a pro-cathedral in 1898 upon the establishment of the Roman Catholic Diocese of Menevia.

[2] Wrexham Cathedral is now a Grade II listed building.