According to the book “Privatissimo – Kunst aus Schleswig-Holsteinishem Adelsbesitz” it is the portrait of Agnes Gräfin von Reventlow geb. von Hammerstein-Loxten.
But on the backsite of the picture is a note saying: "Auguste Gräfin Holck. Gemahlin des Henning Bendix von Qualen auf Damp."
Beskrivelse: English: Miniature portrait of Charlotte Schimmelmann, wife of Ernst Schimmelmann and active salonist Dato ca. 1800 Kilde Statens Museum for Kunst Ophavsmand Cornelius Høyer
.jpg "Conrad Reventlow 1644-1708")
ca. 1589 - eft. 1622 (> 34 år)