About Archduchess Maria Clementina, Princess of Salerno
Archduchess Maria Clementina Franziska Josepha of Austria was Princess of Salerno by marriage to the Sicilian prince Leopold, Prince of Salerno. She was born an archduchess of Austria as the daughter of Francis II, Holy Roman Emperor, and Maria Theresa of Naples and Sicily. Henri and Maria Clementina were also first cousins as both of their mothers were sisters.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.