[...]". - As the letter alludes to Lady Maria Graham Callcott's weak health, it can be dated with some certainty around 1837. If this dating is correct, the Duke of Bedford here mentioned would have been John Russell, 6th Duke of Bedford (1766-1839), whose second wife Lady Georgiana was a renowned patroness of the arts. - The identification of the recipients with Anna Susanna and Leonard Horner would be consistent with the provenance of the letter from the collection of their grandson Leonard Lyell, 1st Baron Lyell (1850-1926). In a letter from 22 November 1842, the historian Henry Hallam informs Leonard Horner of Lady Callcott's grave condition: "Poor Lady Callcott, I fear, is verging fast to her end. I saw her yesterday much feebler than before, and the medical men do not expect her to rally" (The Memoirs of Leonard Horner, p. 52). The friend of Augustus Wall Callcott mentioned in the letter remains unidentified. - With traces of former mounting..