"Françoise Marie de Bourbon, légitimée de France (4 May 1677 – 1 February 1749) was the youngest illegitimate daughter of Louis XIV of France and his maîtresse-en-titre, Françoise-Athénaïs de Rochechouart, Marquise de Montespan. At the age of 14, she was wed to her first cousin Philippe d'Orléans, future Regent of France during the minority of Louis XV. Through two of her eight children she became the ancestress of several of Europe's Roman Catholic monarchs of the 19th and 20th centuries, notably those of Belgium, Italy, Portugal, Spain, and France.
Françoise wielded little political influence considering her near relationships to France's rulers during most of her life. She was involved in the botched Cellamare Conspiracy in 1718 which was supposed to oust her own husband as regent in favour of her full brother Louis-Auguste de Bourbon, Duke of Maine." - (en.wikipedia.org 24.05.2021)