Her brief article in thepeerage is here. Her husband, Eliab Harvey's, Wikipedia article is here.
From Wikipedia.
The British were not as daring as the French, at least in portraits, as shown by this portrait of lady Harvey wearing a simple yet luxurious dress.
Keywords: 1793, Lawrence, Lady Louisa Nugent Harvey, Nugent family, Harvey family, long straight coiffure, cap, vee neckline, modesty piece, chemise, criss-cross bodice, waist band, long tapered sleeves, cuffs, close skirt, shoes, necklace, handkerchief