This is her Wikipedia article: "Princess Maria Immaculata Cristina Pia Isabella of Bourbon-Two Sicilies (Full Italian name: Maria Immacolata Cristina Pia Isabella, Principessa di Borbone delle Due Sicilie) (born 30 October 1874 in Cannes, France; died 28 November 1947 in Muri, Switzerland) was the fourth child and eldest daughter of Prince Alfonso of Bourbon-Two Sicilies, Count of Caserta and his wife Princess Maria Antonietta of Bourbon-Two Sicilies.
Marriage - Maria Immaculata married Prince Johann Georg of Saxony, sixth child and second-eldest son of George of Saxony and his wife Maria Anna of Portugal, on 30 October 1906 in Cannes. Her mother-in-law, Maria Anna, was the daughter of Maria II of Portugal and her husband Ferdinand II of Portugal. The couple did not have children.
She could be confused with Archduchess Maria Immakulata.