Thank you for your reply: I had accessed lots of records for the Quinn family of Mountnorris, but it was only after I had posted here that I discovered the true marriage record of Elizabeth of Mountnorris, daughter of Patrick and Mary; she married in her home district - in the Oratory of Whitecross - on 13 August 1925.
The search for the birth of Elizabeth O'Neill née Quinn, who died 18 October 1932 aged 29 years, continues....