Question: "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?
Sentence (from "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.
Relevant evidence: Yes