Jean I de Montagu, seigneur de Montagu-en-Laye et de Marcoussis

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Jean de Montaigu (Montague)

Birthdate: (46)
Birthplace: Paris, Ile de France, France
Death: Died in Paris, Paris, Île-de-France, France
Cause of death: Décapité
Place of Burial: Marcoussis, Essonne, Île-de-France, France
Immediate Family:

Son of Charles V le Sage, roi de France and Biote Cassinel
Husband of Jacqueline de La Grange
Father of Isabelle / Élisabeth de Montagu; Charles de Montagu, vidame de Laon; Jeanne de Montagu and Jacqueline de Montagu
Half brother of Charles VI of France; Joanna (Jeanne) de Valois; Bonne de Valois, Princess of France; Jeanne de Valois; Charles VI de Valois, roi de France and 7 others

Occupation: Biskop av Chartres sedan Ärkebiskob an Sens, President i kammaren, Kunglig rådgivare, Storhovmästare och Kapten på Bastiljen, Vidame de Laon, chambellan du Roi, Grand-Maitre de France., Grand-Maître de France
Managed by: Lena Anette Grantun
Last Updated:

About Jean I de Montagu, seigneur de Montagu-en-Laye et de Marcoussis

Jean de Montaigu (1363–1409), Bâtard de France, was an illegitimate son of Charles V of France, and an adviser to his father and also to his half-brother, Charles VI. His mother was Charles V's Italian maîtresse-en-titre, Biette de Cassinel, wife of Gerard de Montaigu the Elder. Jean was given his mother's husband's surname despite being recognized as the king's bastard.


His mother was Biette de Cassinel or Biota Cassinelli (c. 1340 – around 1380), called la belle Italienne ("the beautiful Italian woman"), the mistress of the regent, Charles, le dauphin, later King of France as Charles V (called "the Wise"). His mother was the first official mistress of a French monarch. She was the daughter of François Cassinel (died 1360), a sergeant in the Royal Army, and great-granddaughter of Bettino Cassinelli, who had immigrated from Italy to Paris. Biette was married to Gerard de Montaigu the Elder, and Charles had married Joan of Bourbon in 1350, but that did not prevent them from entering into a relationship.

Charles had been obligated to rule France as its regent since 1356, when his father, King John II, was captured by the British during the Battle of Poitiers. His father was freed in 1360 with the Treaty of Brétigny, and Charles was able to retire from the immediate responsibility. He was in this more leisurely situation when he turned to Biette Cassinel. In 1363 she bore him a son, Jean, who was given her husband's surname (de Montaigu), but Charles, who publicly acknowledged his relationship with Biette, recognized his son: Jean de Montaigu was awarded the title Bâtard de France.

In 1364 the political situation changed once again, when King John II, after fleeing his son Louis of Anjou, who had gone in 1360 as a hostage for the costs borne payments to London, voluntarily went into captivity. Charles entered in as regent for a second time and was a short time later king as John II died in April 1364 in London. Moreover, since his son, John, in the meantime had also died, he found himself obligated to provide for the preservation of the dynasty. He turned again to his wife, from whom he received more children since June 1366, including then in December 1368 the longed-for heir, the future Charles VI.

Jean de Montaigu made a career at the royal court, which he led under Charles VI, his half-brother, to the head of the government. Biette's sons were married, as her uncle in the church service and were eventually - long after her death - bishop of Paris and archbishop of Sens.

In 1380 Biette made her last public appearance at the funeral of Charles V.

The Madness of King, who said during the summer of 1392, now seems a sound the death knell of the omnipotence of Marmousets, leaving precipitously

Paris. Montague took refuge in Avignon, where his wife, niece of the famous Cardinal de la Grange has its protections.

Duke John the Fearless arrested his opponent Jean de Montaigu and other "malefactors and false traitors", and Montaigu was beheaded on 17 October 1409 in front of a large crowd in Paris

Among the descendants of Biette Cassinel are:

   * Winston Churchill (1874-1965)
   * Manuel II (1889-1932), the last king of Portugal
   * Umberto II (1904-1983), the last King of Italy
   * Juan Carlos I (born 1938), King of Spain
   * Albert II (born 1934), King of the Belgians
   * Diana, Princess of Wales (1961-1997) and through them
   * Prince William of Wales (b. 1982)

About Jean I de Montagu, seigneur de Montagu-en-Laye et de Marcoussis (Français)

Jean de Montagu ou Jean de Montaigu ou Jean II de Montagu, né vers 1349, mort le 17 octobre 1409, était un homme politique et mécène du Moyen Âge. Trésorier de France puis grand maître de France, seigneur de Montagu-en-Laye et de Marcoussis, il porta les titres de vidame de Laon, de seigneur de Saclas et de capitaine de La Bastille1.

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