The first services were conducted by Father McGinty at the Horse and Jockey Public House at the end of 1854, and then at the old Court House in Alice Street. The first stone Church was opened on 23rd August 1865, the contractor being C.A Doran and it cost one thousand, five hundred pounds. It was known as the Church of the Assumption Warwick, and Bishop Quinn, performed the opening. Dawnbush and Connolly were the architects of the New St. Mary’s Church. Dr. Mannix came to Warwick on 29th February 1920 to lay the foundation stone of the present magnificent gothic inspired Church on the corner of Palmerin and Wood Streets. The Church was not built according to plan. There are no transepts which were planned to be almost as roomy as the present set up, and an area almost as large and across the back of the sacristy would have made the building more impressive than it is now. It was officially opened in 1926, the Rt. Rev. Michael Potter P.P.V.F being the Parish Priest at the time. The columns inside are of Greymare Granite.