Portrait of Ann Miles, later Mrs. John Sell Cotman, full-length, her right hand holding a parasol, her left arm resting on a plinth

John Thirtle (Norwich 1777-1839) Portrait of Ann Miles, later Mrs. John Sell Cotman, full-length, her right hand holding a parasol, her left arm resting on a plinth signed and dated 'THIRTLE DEL.T/1805' (lower left) pencil and watercolour on paper, unframed 11½ x 9 in. (32.2 x 22.9 cm.)