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Treaty of Nantes (Principia Moderni IV Map Game)

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Treaty of Nantes
The Treaty of Nantes Establishing the Vassalage of Brittany
Type of treaty Vassalage Treaty
April 8, 1406
Chateau des Ducs de Bretagne, Nantes, Duchy of Brittany
Sealed April 10, 1406
April 24, 1406
Oath of Arthur III
Signatories Pavillon royal de la France Nicolas du Bosc
Banniel Breizh 1.0 Arthur III
Ratifiers Pavillon royal de la France Kingdom of France
Banniel Breizh 1.0 Duchy of Brittany
Depositary Rome, Papal States
Language Latin

The Treaty of Nantes was a treaty that pertained to the vassalage of the Duchy of Brittany by the Kingdom of France.


  1. The Duchy of Brittany will become a vassal of the Kingdom of France.
  2. The Duchy of Brittany will use the language of Latin, French, or Breton in official court documents.
  3. The Duchy of Brittany will pay feudal taxes to the Kingdom of France.
  4. The Duchy of Brittany will provide armies to the Kingdom of France, and will defend garrisons in its name.
  5. The Kingdom of France will defend the lands of the Duchy of Brittany from foreign invaders.
  6. The Kingdom of France will build forts in Saint-Malo, Saint-Brieuc, and Saint-Pol-de-Léon.
  7. The Duchy of Brittany will be allowed to ally foreign powers as long as it does not conflict the Kingdom of France's interests.
  8. The Duchy of Brittany can create its own laws, as long as it does not conflict with French laws.
  9. The Duchy of Brittany will adopt papal investiture.
  10. The Duchy of Brittany will adopt Jean I de Châtillon, as regent until Arthur reaches the age of sixteen (1410).


By Grace of God, King of France, Defender of the Faith, Charles VI of Valois: Flippedlion NicDonalds Lionsymbol
By Grace of God, Duke of Brittany, Titular Earl of Richmond, Arthur III Monfort:

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