Her name was Frederika Maria Isabella Benjamina van der Capellen and her genealogical sketch is here.
From invaluable.com-buy-now-attributed-to-john-downman.-portrait-of-mademois-9cd4bfd932.ull skirt
The Countess wears her hair bouffant and very long in this portrait. She is not dressed in revolutionary style.
Keywords: Frederika Maria Isabella Benjamina van der Capellen, Barones van ger Capillen, Gravin van der Duyn, van der Capillen family, van der Duyn family, Baroness, Countess, Dutch, long wavy coiffure, ruffle-edged fichu, vee neckline, bodice, long tight sleeves, f