I can find nothing about her in thepeerage.
From bbc.co.
Lady Caroline's all white dress has a sweetheart neckline and satin waist band in this 1824 portrait.
Keywords: 1824, Caroline Hunt, Isham family, Hunt family, curly coiffure, sweetheart neckline, quarter length puffed sleeves, waist band, natural high waistline, necklace, earrings, wrap