Alfonso III d'Este was Duke of Modena and Reggio from 1628 to 1629. He was the husband of Princess Isabella of Savoy, daughter of Charles Emmanuel I, Duke of Savoy and his wife Infanta Catherine Michelle of Spain.
- Occupation
- aristocrat, art collector
- Position held
- Duke of Ferrara and of Modena
- Citizenship
- Duchy of Modena and Reggio
- Born
- October 22, 1591
- Died
- May 24, 1644