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Francis I, Duke of Brittany

Francis I, Duke of Brittany

Duke of Brittany
The basics
Quick Facts
Intro Duke of Brittany
Gender male
Birth 14 May 1414 (Vannes, arrondissement of Vannes, Morbihan, Brittany)
Death 17 July 1450 (Nantes, Loire-Atlantique, Pays de la Loire, France)
Star sign Taurus
Mother: Joan of FranceDuchess of Brittany
Father: John VIDuke of Brittany
Siblings: Peter IIDuke of BrittanyGilles de Bretagne
Spouse: Bonne of SavoyYolande of AnjouIsabella of ScotlandDuchess of Brittany
Children: Margaret of BrittanyMarie of BrittanyViscountess of Rohan
The details

Francis I (in Breton Fransez I, in French François I) (Vannes/Gwened, 14 May 1414 – 18 July 1450, Château de l'Hermine/Kastell an Ermining), was Duke of Brittany, Count of Montfort and titular Earl of Richmond, from 1442 to his death. He was son of Duke John V and Joan of France.


Francis I's first marriage was to Yolande of Anjou, daughter of Louis II of Anjou; they were married at Nantes in 1431. Francis and Yolande had a son, Renaud, Count of Montfort. Renaud died young and Yolande died in 1440.

His second marriage was to Isabel of Scotland (daughter of James I, King of Scots); he married Isabel at the Château d'Auray on 30 October 1442. Francis and Isabel had two daughters:

  • Margaret of Brittany (1443–1469, Nantes), married Francis II, Duke of Brittany
  • Marie of Brittany (1444–1506), married John II, Viscount of Rohan and Count of Porhoët.


Francis I died in 1450. Because he had no male heirs at the time of his death, he was succeeded by his younger brother, Peter II.


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