The Wikipedia article for the probable Lord Bulkeley-Phillips is here. If this is correct, Her Ladyship's maiden name was Eliza Gordon.
From April's photostream on flickr.
Lady Bulkeley-Phillips uses dark bows and lace to provide dramatic contrast to her pale-colored dress in this print from around 1840.
Keywords: 1840, Knight, Chalon, Lady Bulkeley Phillips, straight coiffure, jeweled headdress, bun, off shoulder straight neckline, modesty piece, pleated bodice, elbow length bottom puffed tight sleeves, bows, engageantes, lace, vee waistline, full skirt, over-skirt, ruffles, earrings, brooch, glovelets