Lady Maitland (Catherine Connor, died 1865) by Sir Henry Raeburn (Metropolitan Museum - New York City, New York USA)
This is her brief article from thepeerage, "Catherine Conner F, #349101, d. 6 March 1865
Catherine Conner was the daughter of Daniel Conner. She married Rear-Admiral Sir Frederick Lewis Maitland, son of Captain Hon. Frederick Lewis Maitland of Rankeillour and Margaret Dick, in April 1804. She died on 6 March 1865.
From April 1804, her married name became Maitland." Her husband died childless in 1839 according to his article in thepeerage.