Roberto I (1848-1907) was the last sovereign Duke of Parma and Piacenza (which was a duchy that existed until 1859, when it joined Italy).
He married twice and had a total of 24 children.
With his first wife, Princess Maria Pia of the Two Sicilies, he had a dozen children:
- Marie Louise
- Louisa Maria
- Maria Immacolata
- Maria Teresa
- Maria Pia
- Maria Beatrice
- Elia (male)
- Maria Anastasia
- Augusto/Augusta (gender unknown)
After his first wife died during childbirth, Robert married his second wife, Infanta Maria Antonia of Portugal, and had a dozen more children:
- Maria della Neve Adelaide
- Maria Antonia
- Henrietta Anna
Which set of 12 do you like better?