 The building was originally a private home known as Kelvin Grove , and owned by Mrs Jane Drynan . Much of the exterior of the church is original but none of the internal walls were retained when the building was converted into a church . Following Drynan 's death , Kelvin Grove was owned or leased by a succession of different people , including the Haberfield real @-@ estate developer Richard Stanton , Croydon brick @-@ maker William Downton , and two sisters named Freeman ( one of whom was a nurse ) . In the 1920s and 1930s Kelvin Grove may have been used as a nursing home . The first mass was celebrated in Kelvin Grove on St Patrick 's day 1946 , giving the church its name . 
