Georgiana Marcia Rolls, Lady Llangattock, (née Maclean; 28 February 1837 (baptised) – 1 April 1923) was a British socialite, benefactor and an enthusiast for Horatio Nelson and associated naval heroes.

Georgiana was the daughter of Sir Charles Maclean, 9th Baronet of Morvern and Emily Eleanor (born Marsham).

[8] Her husband's peerage and rank enabled them to invite the Duke and Duchess of York (later King George V and Queen Mary) in 1900 to stay with them at the Hendre.

Her two other sons were killed in action during the First World War, so she was the last Lady Llangattock, and her daughter Eleanor Shelley-Rolls (9 October 1872 – 15 September 1961) was the heir to the Hendre.

The Llangattock Collection, which includes a substantial quantity of letters written by Nelson to his wife, was bequeathed to the town of Monmouth.

[12] The first building which housed the collection, initially a gymnasium on Glendower Street donated to the town of Monmouth by Lady Llangattock, is now known as the Nelson Rooms.