Paolo Giordano I Orsini

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Paolo Giordano Orsini in a group painting by Giovanni Maria Butteri. 1575

Paolo Giordano Orsini (1541 – 13 November 1585) was an Italian nobleman, and the first duke of Bracciano from 1560. He was a member of the Roman family of the Orsini.


The son of Girolamo Orsini and Francesca Sforza, he was grandson, on his father’s side, of Felice della Rovere (illegitimate daughter of Pope Julius II) and Gian Giordano Orsini and, on his mother’s side, of Count Bosio Sforza and Costanza Farnese, an illegitimate daughter of Pope Paul III.

On 3 September 1558 he married Isabella de' Medici, daughter of Cosimo I de' Medici, Grand Duke of Tuscany, at Poggio a Caiano.[1] Paolo Giordano lived mostly in Rome and his castle at Bracciano, rather than with his wife, who stayed mostly at Florence. In 1571 he took part to the battle of Lepanto. A year later, in October 1572, he served as a general of the Spanish infantry, in a campaign that tried to reclaim the garrison of Navarino in the Peloponnese.[2]

On 16 July 1576 his wife died unexpectedly at the Medici villa of Cerreto Guidi during a hunting holiday. According to her brother, the grand duke Francesco I de' Medici, this occurred "while she was washing her hair in the morning ... She was found by Signor Paolo Giordano on her knees, having immediately fallen dead."[3] However, this official version of events was not generally believed, and the Ferrarese ambassador, Ercole Cortile, obtained information that Isabella was "strangled at midday" by her husband in the presence of several named servants.[4] Isabella was the second sudden death in an isolated country villa in the Medici family, her cousin Leonora having died of a similar "accident" only a few days before.[5] Most historians assume that Paolo Giordano killed his wife, in reprisal for carrying on a love affair with his cousin Troilo Orsini, or that he acted on instructions of Isabella's brother, the grandduke.[6] One scholar, Elisabetta Mori, has argued that Isabella de' Medici died of natural causes and that the rumour that Paolo Giordano murdered her was spread by enemies of the Medici.[7]

After these events Paolo Giordano returned to Rome, where he started a relationship with Vittoria Accoramboni, wife of Francesco Peretti, the nephew of the future Pope Sixtus V. Peretti was assassinated, it was believed by Paolo Giordano's order, in April 1581. Wanted by both the Papal and Florentine police, Paolo Giordano took refuge in northern Italy, first in Venice and then in Abano and Salò with his mistress, whom he married on 20 April 1585. He died at Salò on 13 November 1585.[8] On 22 December Vittoria was herself assassinated, by Ludovico Orsini of the Monterotondo line, on the instigation of Grand Duke Francesco.[9] The Medici (Francesco and Cardinal Ferdinando) wished to secure movable assets in possession of Vittoria for their nephew Virginio Orsini, Paolo Giordano's son from his first marriage and principal heir.


  1. Murphy 2008 pp. 65–66
  2. Murphy 2008 pp. 221–222
  3. Murphy 2008 p. 324
  4. Murphy 2008 pp. 324–325
  5. Murphy 2008 pp. 316–324
  6. Murphy 2008 pp. 328–333
  7. Mori
  8. Herman 2013 pp. 315–316; 325–326
  9. Herman 2013 pp. 345–347, 374


  • Herman, Eleanor (2013): Murder in the Garden of God: A True Story of Renaissance Ambition, Betrayal, and Revenge. Createspace. ISBN 9781492183013
  • Murphy, Caroline (2008): Isabella de' Medici: The Glorious Life and Tragic End of a Medici Princess. Faber & Faber. ISBN 9780571230303
  • Mori, Elisabetta (2011): L'onore perduto di Isabella de' Medici. Garzanti. ISBN 978881174119-0

Further reading

  • Furlotti, Barbara (2013): A Renaissance Baron and his Possessions. Paolo Giordano I Orsini, Duke of Bracciano (1541-1585), Brepols. ISBN 978-2-503-53474-9
Preceded by
New creation
Duke of Bracciano
Succeeded by
Virginio Orsini