Joan (Born 1714 Palermo- Died 1795 Naples) was the first queen (and fifth monarch) of Sicily. On October 26th 1732 she married Matthew II, King of Tuscany. They had the following children:
- Matthew I - Her successor and King of Tuscany. Later king of Italy.
- Mary - Duchess of Saxe-Altenburg
- Victoria - Archqueen of Sweden
| Preceded by: Henry II |
 Queen of Sicily 1757-1795 |
Succeeded by: Matthew I |
| Duchess of Malta 1757-1795 | ||
| Duchess of Dalmatia 1757-1795 | ||
| Duchess of Morea 1757-1795 |