House of Foix
Country Brittany
Titles Duke of Aquitaine
Duke of Brittany
King of Navarre
Founded 1010 (Bearn) 1463 (Aquitaine)
1554 (Brittany)
1624 (Navarre)
Founder Bernard-Roger (County of Bearn) Francis II (Aquitaine)
Francis III (Brittany)
Henry II (Navarre)
Final ruler Geoffrey I (Brittany) Mary II (Aquitaine)
Dissolution 1561 (Brittany) 1982 (Aquitaine)
Cadet branches House of Foix of Navarre

House of Vienne

House of Bourbonnais
The House of Foix is a noble family originating in Bearn, north of the Pyrenees. The family rose to royalty when Gaston IV de Foix married off his son to a daughter of the last king of France. When France was defeated in the Hundred Years War, Gaston rallied the nobility of Aquitaine  and declared independence for Aquitaine, which was recognised by Burgundy in 1466. Gaston then married his daughter to Francis II; the Duke of Brittany, becoming grandfather to both the Duke of Aquitaine and Duchess of Brittany

Union of Aquitaine and Brittany

Duchess Anna of Brittany had a daughter by her second husband, Geoffrey of Angers; Henrietta, who succeeded her mother to the Duchy.

Francis III , the young successor to Francis II of Aquitaine, married the heiress, uniting the two duchies under the Aquitanian House of Foix.

Navarrese Kings

In 1623, Navarre became independent. The Navarrese nobles wished to elect one of themselves but, after rough persuasion, accepted Henry II as their king; a younger cousin of Duke Geoffrey III, forcing Henry to renounce his claim on the Aquitanian throne on behalf of himself and his descendants.

Fall in Aquitaine

After the dissolution of the Aquitanian realm, brought about by Castille and the HRE, the House of Foix maintained rule over Birttany, Anjou, Bordeaux, Navarre and Aquitaine. Intending to rebuild their former glory, the annexed their former territories, creating a French Union.

However, the death of Duchess Mary II prompted her husband, about to be deprived of rule according to the will of the late Duchess, who named her sister Elisabeth as her successor, dissolved the French Union and created a French Republic, centered around Paris.

The new republic was ruled by the Vienne family, headed by Charles de Vienne, former husband of Mary II and named Chancellor of France. The Vienne family ruled until their deposition and the Bourbonnais family, descendants of Elisabeth, were put on the throne.

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