About Princess Maria Antonia of Naples and Sicily
Maria Antonia of Naples and Sicily (14 December 1784 – 21 May 1806) was the youngest surviving daughter of Ferdinand, King of Naples and Sicily, and Maria Carolina of Austria. As the wife of the future Ferdinand VII of Spain, then heir apparent to the Spanish throne, she held the title of Princess of Asturias. It was rumoured that her mother-in-law, Maria Luisa of Parma, caused her death, but there is no evidence to prove this. == Early life == Born at the Caserta Palace in Caserta, Italy, Maria Antonia was the youngest daughter of King Ferdinand IV/III of Naples and Sicily and his first wife, Maria Carolina of Austria. Named after her mother's favourite sister, her maternal aunt Queen Marie Antoinette of France, she was an intelligent girl, having learned several languages by the age of seventeen. === Marriage === In a series of dynastic alliances, a double marriage took place. Maria Antonia became engaged to her first cousin, Infante Ferdinand, Prince of Asturias (who later became King Ferdinand VII of Spain), while her eldest brother, Francis, became engaged to Infante Ferdinand's younger sister, Infanta Maria Isabella of Spain. On 4 October 1802, 13-year-old Maria Isabella married Francis, who was 25 years old, and two days later, on 6 October, Maria Antonia married Infante Ferdinand in Barcelona, Spain. Both of them were seventeen, with Ferdinand only being two months older than Maria Antonia, and the marriage took place the week before his eighteenth birthday. Their fathers were brothers.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.