[2] The foundation stone of Holy Trinity Church was laid on 31 October 1866 by the Right Rev'd John Gregg, D.D., then Bishop of Cork, Cloyne and Ross.

[1] The original design for the church included a substantial tower, its inspiration drawn from the medieval campanile of northern Italy, and this can be seen in an illustration in the Irish Builder and Engineer of 15 April 1873.

The accompanying article spoke of the completion of the tower as fulfilling "one of the happiest of architectural compositions it has been our pleasure to describe for a very long time.

It is however identified by architectural historians as recognisably Burges's work, with J. Mordaunt Crook noting that "the smooth plate tracery, the low-slung battered porch, the emphatic string courses: these are all Burgesian trademarks.

"[5] Mordaunt Crook also notes the interior as "measur(ing) up to the quality of the exterior - notably the pelican-dragon corbels of the chancel arch and the stained glass at the East end.