1818 (estimated from inscription) Princess Charlotte Augusta of Wales by Charlotte Jones (Ellison Fine Art)
These are Ellison's notes for the image: "A fabulously large miniature portrait of Princess Charlotte Augusta of Wales, depicted three-quarter length seated on a chaise longue, wearing an embroidered and blue ribbon trimmed mob cap, wearing a string of pearls, an emerald and pearl brooch at her breast, and wearing a blue striped dress and embroidered wrap by a table and blue curtain drape by an open window to a mountainous scene signed on the reverse of the inner fitting frame in pen and ink Charlotte Jones Pinxit Miniature Painter to Her Late Royal Highness The Princess Charlotte of Wales (and with remnants of red wax seals to the angles), contained in a crushed morocco case with paper label inscribed Charlotte Miniature Painter to The Late Royal Highness Princess Charlotte of Wales
Dimensions: rectangular, 17cm by 13cm,
The fact the Jones refers to Princess Charlotte as the late Royal Highness suggests that the Princess had passed away by the time the portrait was completed so whilst it may have been taken during her life time it was finished after her death making 1818 a likely date for this miniature to have been executed. For a portrait of Princess Charlotte of Wales (1796-1817), daughter of George IV, and wife of Leopold of Saxe-Coburg-Saalfeld (late King of the Belgians) (1790-1865), see Foskett (Daphne) A Dictionary of British Miniature Painters, Vol II, pg 59 (that example is 3¼ inches, is in the Queen's Collection, and an illustration of this miniature appears on pl.191 (illus.488) by Gracious Permission of HM The Queen Charlotte's parents separated a few months after her birth, their marriage having lasted only a year. Charlotte was brought up by governesses and saw little of her mother. Despite spending much of her childhood in seclusion, she was warm-hearted if excitable. She married Prince Leopold of Saxe-Coburg in 1816. They enjoyed only a few months of happiness before she died in childbirth the following year. Public grief at her death was heightened by the universal scorn felt for the Royal family..."
The object covering her scalp is called a "mob cap." Funny - "mobs" are said to be invading Wall Street according to the impeccably honest and trustworthy Eric Cantor. But the pictures I see of them show nobody wearing "mob caps."