Images of Marguerite de Valois, la reine Margot, mainly by François Clouet follow. Her Wikipedia article is here.
I had confused her with Marguerite de France who became Duchees of Berry and Savoy.

ca. 1571 Marguerite de Valois by François Clouet (Châteaux de Versailles et de Trianon - Versailles, Île-de- France, France)

1573 Marguerite de Valois, Reine Margot, wearing cap decorated with pearls by François Clouet (location unknown to gogm)
