Powis, Lady Henrietta Antonia, Countess of [H. A. Powis] (Welsh, 1758–1830)

English and Welsh aristocrat, mineralogist, and patron of the arts, born Lady Henrietta Antonia Herbert at Oakly Park, Shropshire. As the daughter of Henry Herbert, 1st Earl of Powis, and wife of Edward Clive, 1st Earl of Powis, she managed the extensive libraries at Powis Castle and Walcot Hall. She was the mother of Lady Henrietta Antonia Williams-Wynn (1786–1835).