Lady Elizabeth Bingham was born in Castlebar, Co.Mayo, Ireland. She was one of the five daughters of Richard Bingham, 2nd Earl of Lucan (1764-1839) and Lady Elizabeth Belasyse, daughter and co-heir of Henry, 2nd Earl Fauconberg, who had previously been married to Bernard, 12th Duke of Norfolk. Elizabeth married George Granville Vernon-Harcourt (1785-1861), son of Most Rev. and Rt. Hon. Edward Venables-Vernon-Harcourt and Lady Anne Leveson-Gower, on 27 March 1815. They had one daughter, Elizabeth Lavinia Vernon-Harcourt, who died 16th October 1858. A pencil and ink drawing by Sir George Hayter depicting Elizabeth around the time of her marriage is the National Portrait Gallery, London.
The present lot is one of several miniatures of children, where Cosway includes the arms. These are notoriously difficult to draw and many miniaturists failed to do so convincingly. However, the successful depiction in the present lot shows Cosway's talent as a draughtsman, even on this small scale. For other examples of Cosway children where the arms are depicted, cf. Christie's, London, 10 November 1993, lot 52 (girl with arms crossed) and D. Foskett, Collecting Miniatures, 1979, p.361, pl.104E (Master Bunbury with hands on hips).