The daughter of James St John Jeffreyes of Blarney Castle; in 1793 she married Richard Butler (1775-1819) eleventh baron Caher and first earl of Glengall. She was the original of Lady Singleton in Lady Morgan's novel O'Donnel.

REFERENCES TO Emily Butler, countess of Glengall [née Jeffreyes]:

Sydney Owenson to Thomas Charles Morgan, November 1811 in Lady Morgan’s Memoirs: Autobiography, Diaries and Correspondence. Second Edition, Revised 2 vols (London: Wm. H. Allen & Co., 1863)

Sydney Owenson to Thomas Charles Morgan, 26 December 1811 in Lady Morgan’s Memoirs: Autobiography, Diaries and Correspondence. Second Edition, Revised 2 vols (London: Wm. H. Allen & Co., 1863)

Lord Byron to Thomas Moore, 5 May 1814 in Letters and Journals of Lord Byron 2 Vols (London: John Murray, 1830)

Thomas Creevey to Elizabeth Ord, 3 September 1821 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Thomas Creevey to Elizabeth Ord, 28 May 1822 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Maria Copley to Thomas Creevey, 12 January 1823 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Thomas Creevey to Elizabeth Ord, 5 March 1827 in The Creevey Papers: A Selection from the Correspondence & Diaries of the late Thomas Creevey, M.P. (London: John Murray, 1903)

Sydney Smith to Lady Grey, 7 January 1832 in A Memoir of the Reverend Sydney Smith. By his Daughter, Lady Holland. With a Selection from his Letters, edited by Mrs. Austin 2 vols (London: Longman, Brown, Green, and Longmans, 1855)