About Louise Marie Adélaïde de Bourbon, Duchess of Orléans
Louise Marie Adélaïde de Bourbon-Penthièvre, Duchess of Orléans (13 March 1753 – 23 June 1821), was the daughter of Louis Jean Marie de Bourbon, Duke of Penthièvre and of Princess Maria Theresa Felicitas of Modena.
At the death of her brother, Louis Alexandre de Bourbon-Penthièvre, prince de Lamballe, she became the wealthiest heiress in France prior to the French Revolution.
She married Louis Philippe II, Duke of Orléans, the "regicide" Philippe Égalité, and was the mother of France's last king, Louis Philippe I, King of the French.
She was sister-in-law to the princesse de Lamballe, and was the last member of the Bourbon-Penthièvre family.