Princess Maria Cristina of Bourbon-Two Sicilies was the titular Grand Duchess of Tuscany from 28 February 1942 to 4 October 1947 as wife of Archduke Peter Ferdinand of Austria, Prince of Tuscany, the titular Grand Duke.

Prince Alfonso, Count of Caserta was the third son of Ferdinand II of the Two Sicilies and Archduchess Maria Theresa of Austria.