There were two Marguerites de France. One was the duchesse de Berry and de Savoie. She lived between 1523 and 1574. Her Wikipedia article is here.
The other, la reine Margot, is covered here.

1547-1550 Marguerite de France, duchesse de Savoie by François Clouet workshop (Musée Condé - Chantilly, Picardie, France)

Marguerite de France, duchesse de Savoie after François Clouet (Musée Condé - Chantilly, Picardie, France)

Marguerite de Valois Marguerite de France Duchess of Savoie by ? (Conservatoire numérique des Arts & Métiers)
