Sotheby’s listed this as "Portrait of lady,
probably Madame Blondel D'azincourt, dressed in a blue polka dot cape and fur
A genealogical sketch for her is here.
From the Sotheby’s Web site.
Mme. Blondel-d’Azincourt is dressed for outdoors on a cool day with a lace cap, a cape and arm-slits (salopp) and hood, and a fur muff.
Keywords: 1786, Perronneau, Charlotte Marie Blondel-d’Azincourt, Blondel-d’Azincourt family, de Tragin family, French, straight coiffure, lace ribboned cap, necklace, fichu, vee neckline, fur-trimmed cape, salopp, fur-trimmed hood, bows, bodice, long tight sleeves, muff