Answer the following question: - caption is lady of ninety-three , sketch in oils by sir george hayter louisa stuart in 1851 , at the age - death date is 4 august 1851 - parents is john , countess of bute stuart , 3rd earl of bute mary stuart - birth date is 12 august 1757 - image is lady louisa stuart by george hayter.jpg Given the details above, guess who could this information be about.
Answer:
lady louisa stuart