More to explore:
Catherine de Medici
Catherine the Great
Marguerite de Valois aka Reine Margot, daughter of Catherine de Médicis, sister of Henri III and wife of Henri IV.
Marguerite de Valois, Queen of France
Isabel de Bourbon, Queen of Spain, 1620
Maria (di Cosimo I) de' Medici by Agnolo Bronzino ca. 1551
Possibly Catherine of Aragon, queen of England by Wilfred Drake,drawing,1921. This appears to be a watercolor of a unknown stained glass window believed to depict Catherine of Aragon.