County of Fézensac

• Ruling Houses
• 

  House of Gascony

• 

  House of Fézensac

• 

  House of Armagnac

• 

  House of Lomagne-Armagnac

• 

  House of Alençon
  Charles IV d'Alençon

• 

  House of Albret

• 

  House of Bourbon
  Joined with royal domain

• 

  House of Lorraine-Harcourt

• 

  House of Montesquiou