Its final tornada makes reference to mercès a vós demana ("thanks to your pleading"), which may be an allusion to the local cult of Barcelona for Mary Mother of Mercy.
Maria da Glória O'Neill (Lisbon, Mercês, 1 September 1828 - 21 June 1884), married Lisbon, Encarnação, 9 September 1848 her first cousin João de Sampaio de Roure (Hampstead, London, 16 January 1822 - 12 October 1880), son of João Pedro de Roure and wife Maria João O'Neill, and had issue