Princess Luisa Carlotta of Naples and Sicily (1804-1844) was the daughter of Francis I of the Two Sicilies (1777-1830) and his second wife Maria Isabella of Spain (1789–1848). Princess Luisa married her maternal uncle Infante Francisco de Paula of Spain. Luisa Carlotta played a decisive role in the introduction of new law in Spain which allowed for female succession. She wished for her niece Isabella to become heiress to the Spanish throne instead of her uncle Carlos and so acquired a document from the prime minister Tadeo Calomarde which forbade female succession and burnt it. When Calomarde tried to save the document, she hit him and he famously said, "Madame, white hands don't offend!"