The Earl and Countess of Crawford and Balcarres by Thomas Rodger, 1855
Alexander William Crawford Lindsay, 25th Earl of Crawford and 8th Earl of Balcarres (1812-1880), Book collector and writer on art. Margaret (née Lindsay), Countess of Crawford and Countess of Balcarres (1824-1909), Wife of 25th Earl of Crawford and 8th Earl of Balcarres.
In the photo below Countess of Crawford and Balcarres is wearing the same dress. Taken by the same photographer, probably from the same sitting, at Balcarres:
On the above photo: James Lindsay, 24th Earl of Crawford and 7th Earl of Balcarres (1783-1869), Politician and landowner. Alexander William Crawford Lindsay, 25th Earl of Crawford and 8th Earl of Balcarres and Margaret (née Lindsay), Countess of Crawford and Countess of Balcarres.
source: National Portrait Gallery