Guyonne de Laval née Renée de Rieux (1524–1567) was a French suo jure countess of Laval 1547–1567. She, along with Louis, Prince of Condé (1530–1569), Gaspard II de Coligny and François de Coligny d'Andelot are pointed out as one of the instigators of the famous Surprise of Meaux of 1567.
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Life
Early life
She was born to Claude I de Rieux (1497–1532), Sire de Rieux et de Rochefort, Comte d’Harcourt et d’Aumale, and Catherine de Laval (1504–1526).
She served as lady-in-waiting to the queen of France, Eleanor of Austria, in 1533–1547. In 1540 she married Louis de Sainte-Maure.
Countess of Laval
In 1547, she inherited the title Count of Laval from her maternal grandfather Guy XVI de Laval. Because of her sex, she was forced to share the title and domain with her husband Louis de Sainte-Maure (jure uxoris). Because all the counts of Laval were named Guy, she and her spouse changed their names to Guyonne and Guy.