Margaret de Baux

Margaret of Baux
Countess of Saint-Pol, of Brienne, and of Conversano
Coat of arms
Spouse(s)	Peter of Luxembourg, Count of Saint-Pol, of Brienne, and of Conversano
Issue Louis de Luxembourg, Count of Saint-Pol Jacquetta of Luxembourg Thibaud of Luxembourg Jacques of Luxembourg Valeran of Luxembourg Jean of Luxembourg Catherine of Luxembourg Isabelle of Luxembourg
Noble family	House of Baux (by birth) House of Luxembourg (by marriage)
Father	Francis of Baux
Mother	Sueva Orsini
Born	1394
Died	15 November 1469 (aged 74–75)

Margaret of Baux (French: Marguerite des Baux, Italian: Margherita del Balzo; 1394 – 15 November 1469) was a Countess of Saint-Pol, of Brienne, and of Conversano. She was a member of the noble House of Baux of the Kingdom of Naples, which had its origins in Provence dating back to the 11th century. Her husband was Peter of Luxembourg, Count of Saint-Pol, of Brienne, and of Conversano (1390 – 31 August 1433). Margaret's descendants include English Queen Consort Elizabeth Woodville, King Henry IV of France, Mary, Queen of Scots, and all English monarchs after 1509.

Margaret was born in 1394, the daughter of Francis of Baux (1330 – 23 April 1422) by his third wife Sveva Orsini (1360 – c.1430). a descendant of Simon de Montfort, 6th Earl of Leicester and Eleanor of England (daughter of King John of England).

Her paternal grandparents were Bertrand III of Baux, Count of Andria and Squillace, and Marguerite d'Aulnay, and her maternal grandparents were Nicola Orsini, Count of Nola, Senator of Rome (27 August 1331 – 14 February 1399), and Jeanne de Sabran.

On 8 May 1405, Margaret married Peter of Luxembourg, Count of Saint-Pol, of Brienne, and of Conversano (1390 – 31 August 1433), the eldest son of John of Luxembourg, Lord of Beauvoir and Marguerite of Enghien, Countess of Brienne and of Conversano, Heiress of Enghien. Peter inherited his mother's fiefs, which included the counties of Brienne and Conversano. He succeeded his aunt Jeanne of Luxembourg, Countess of Saint-Pol and Ligny, as Count of Saint-Pol in 1430. His younger brother John II of Luxembourg, Count of Ligny, an ally of the English during the Hundred Years War, received Joan of Arc as his prisoner, and subsequently sold her to the English, for 10,000 livres.