Background
Alfonso was born in Modena, the eldest son of Francesco I d'Este, Duke of Modena, and his first wife, Maria Caterina Farnese.
Alfonso was born in Modena, the eldest son of Francesco I d'Este, Duke of Modena, and his first wife, Maria Caterina Farnese.
He was the father of Mary of Modena, consort of James II of England. 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. 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.