Noted events in her life were:
1. She appeared on the census in 1841 in Clarendon Place, Leamington Priors, Warwickshire.
2. She appeared on the census in 1851 in 2 Pont Street, St. Georges Hanover Square, London.
Mary married Lucius O'Brien, 13th Baron Inchiquin, son of Edward O'Brien and Charlotte Smith, on 2 January 1837. (Lucius O'Brien, 13th Baron Inchiquin was born on 12 May 1800 in Ireland and died on 22 March 1872.)