Ordnance Survey reference SH 797616.
The foundation stone of St. Mary's was laid on 26 May 1841, and the church was consecrated on 28 October 1842.
It was built specifically to cater for the increasing number of English-speaking visitors to Llanrwst and the immediate neighbourhood.
It was closed some years ago, and only the foundations now remain.
The Clwyd FHS website has a photograph of the ruins.
The following Parish Registers have been deposited at the Denbighshire Record Office, Ruthin.
They may be viewed on microfilm at the Denbighshire and Flintshire Record Offices, at Conwy Archive Services, and at the National Library of Wales, Aberystwyth.
These microfilms are not available elsewhere.
1891 - 1956
1884 - 1955
1891 - 1942
No Bishop's Transcripts have been deposited for St. Mary's, Llanrwst.
There are no official I.G.I. entries for St. Mary's, Llanrwst.