Alfonso IV d'Este

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Alfonso IV d'Este
Portrait by Justus Sustermans
Duke of Modena and Reggio
Reign	14 October 1658 – 16 July 1662
Predecessor	Francesco I d'Este
Successor	Francesco II d'Este
Born	(1634-02-02)2 February 1634 Ducal Palace, Modena
Died	16 July 1662(1662-07-16) (aged 27) Ducal Palace, Modena
Spouse	Laura Martinozzi ​ (m. 1655)​
Issue	Mary, Queen of England, Scotland and Ireland Francesco II, Duke of Modena
House	Este
Father	Francesco I d'Este, Duke of Modena
Mother	Maria Caterina Farnese
Religion	Roman Catholicism

Alfonso IV d'Este (2 February 1634 – 16 July 1662) was Duke of Modena and Reggio from 1658 until his death. He was the father of Mary of Modena, consort of James II of England.

Alfonso was born in Modena, the eldest son of Francesco I d'Este, Duke of Modena, and his first wife, Maria Caterina Farnese.^[1] He became Duke of Modena and Reggio after his father's death in 1658. Alfonso's health was poor and he suffered from gout and tuberculosis. He died four years into his reign.

In 1655 he married Laura Martinozzi, Cardinal Mazarin's niece, thus strengthening his alliance with France. On Laura's sixteenth birthday, 27 May 1655, she was married to the Duke of Modena by proxy at the Palace of Compiègne, with the Count of Soissons standing in the place of the Duke of Modena. They had two children, Maria and Francesco, who went on to become Queen of England and Duke of Modena, respectively.

In 1659 the Franco-Spanish War came to an end and Modena was rewarded with the town of Correggio for supporting France.

He was succeeded by his two-year-old son, under the regency of his widow.

• Chiappini, Luciano (2001). Gli Estensi. Mille anni di storia. Ferrara.{{cite book}}: CS1 maint: location missing publisher (link)

• Media related to Alfonso IV d'Este, Duke of Modena at Wikimedia Commons