Oil on canvas, 125.7cm by 99cm.
In 1848 Lady Georgina Pakenham (1827-1909), a daughter of the 2nd Earl of Longford, married William Alleyne Cecil, Lord Burghley.
He succeeded his father as 3rd Marquess of Exeter in 1867.
The artist trained initially in Edinburgh and later spent time in both Italy and Spain.
He became a highly successful portrait painter, painting many of the fashionable beauties and eminent gentlemen of the day.