Isabella's article in thepeerage is here.
The location is not known to me.
From tumblr.com/search/19th%20c.%20Britain; enlarged by half.
The A-line skirt of the early 20s is morphing into the dome skirt that would last from the 1830s until 1870.
Keywords: 1831, Grant, Anne Elizabeth Weld-Forester, Countess of Chesterfield, Isabella Elizabeth Annabella Weld Forester, Weld-Forester family, Stanhope family, Anson family, Countess, British, neo hurluberlu coiffure, ribboned hat, off shoulder vee neckline, modesty piece, dual upper puffed sleeves, cuffs, waist band, natural waistline, close skirt, scarf