"Don" Carlos, Duke of Madrid was the senior member of the House of Bourbon, a European royal house of French origin, a branch of what?
Carlos, Duke of Madrid "Don" Carlos, Duke of Madrid (Spanish: "Carlos María de los Dolores Juan Isidro José Francisco Quirico Antonio Miguel Gabriel Rafael"; 30 March 1848 – 18 July 1909) was the senior member of the House of Bourbon from 1887 until his death. He was the Carlist claimant to the throne of Spain under the name Carlos VII from 1868 (his father's Spanish abdication), and the Legitimist claimant to the throne of France under the name Charles XI after the death of his father in 1887.
Anne Marie de Bourbon Anne Marie de Bourbon (Anne Marie Victoire; 11 August 1675 – 23 October 1700. ) was the daughter of the Prince of Condé and of a Bavarian princess. As a member of the reigning House of Bourbon, she was a "Princesse du Sang". She never married and died of lung disease.