Opened 1866 to replace an earlier building, St Joseph’s (opened 1842).

Centenary of the setting of the foundation stone of the first Roman Catholic Church in Launceston in 1839

OPENING OF THE CHURCH OF THE APOSTLES.
The erection of the Catholic Church of the Twelve Apostles, in Margaret street, having been completed so far as intended at present, it was solemnly opened for religious purposes yesterday by the Right Rev. Dr. Murphy, Bishop of Hobart Town. The portion of the edifice now erected comprises merely the nave and two aisles, running from north to south, at the southern end of which, as soon as sufficient funds are available it is intended to add another building, to run from east to west–the whole to assume the form of the letter T. In the present portion an abutment is formed in stonework to the nave arcading end within this, which is enclosed entirely with weatherboarding, is formed a temporary chancel, and a sacristy at the south-east end of the aisle.
[continued]
Launceston Examiner, 8 November 1866

Interior photos on The Medievalism in Australian Cultural Memory project website.

Stained glass windows on Stained Glass Australia site