Hercule Mériadec, Prince of Guéméné (1688–1757), son of Charles III, Prince of Guéméné and Charlotte Élisabeth de Cochefilet
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Hercule Mériadec, Duke of Rohan-Rohan (1669–1749), son of François, Prince of Soubise and Anne de Rohan-Chabot
Hercule Mériadec died at Sainte-Maure aged sixty nine and was succeeded by his son, Jules.
Jules, Prince of Guéméné (1726–1800), son of Hercule Mériadec, Prince of Guéméné and Louise de Rohan