Princess Madeleine, Duchess of Parma and Piacenza (23 March 1898 – 1 September 1984) was the titular Duchess of Parma and Piacenza (from 1974) and was also Carlist Queen of Spain (from 1952) as the wife of Prince Xavier of Bourbon-Parma, the Carlist pretender to the Spanish throne.

She was born of a cadet branch of the Bourbon Counts of Busset, male-line descendants of Louis de Bourbon (1437–1482), prince du sang, Bishop of Liège,[1] allegedly by a liaison with Catherine de Gueldres.

[3] Prince Xavier, a younger son of Robert I, Duke of Parma, and Madeleine were wed on 12 November 1927 at the château de Lignières in Cher.

[3] The marriage was accepted as dynastic at the time by neither Elias, Duke of Parma (Xavier's elder half-brother, then acting head of the House of Bourbon-Parma), nor by the senior Bourbons of the Spanish branch (Alfonso XIII), but was later recognized by the Parmesan Duke Robert Hugo,[1] and by the Carlist pretender Infante Alfonso Carlos, Duke of San Jaime.

[4] and accused Princess Cecile and Carlos Hugo of taking her husband out of the hospital against the instructions of the doctors to force him to sign a manifesto against Traditionalism.