Eleonora d'Este may refer to: Eleonora d'Este (1515–1575), daughter of Alfonso I d'Este and Lucrezia Borgia, nun, and possibly a composer of religious music Eleonora d'Este (1537–1581), daughter of Ercole II d'Este and Renata di Francia Eleonora d'Este (1561–1637), daughter of Alfonso d'Este, marquess of Montecchio Eleonora d'Este (1595–1661), daughter of Cesare d'Este, duke of Modena Leonora or Eleonora d'Este (1639–1640), daughter of Francesco I d'Este, duke of Modena Eleonora d'Este (1643–1722), daughter of Francesco I d'Este, duke of Modena