House of Dreux-Brittany
Cadet branch of the House of Dreux
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House of Dreux-Brittany
Dukes of Brittany
Before 1316 -
House of Dreux-Brittany
Dukes of Brittany
After 1316
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House of Machecoul
Lords of Machecoul, La Bénate, Coutumier, Bouin, Bourgneuf-en-Retz and Coché
Issued from Olivier, son of Pierre Mauclerc from his 2nd marriage -
House of Montfort-Brittany
Counts of Montfort
Earls of Richmond
Dukes of Brittany
Issued from John of Montfort, son of Arthur II of Brittany from his 2nd marriage
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Pierre Mauclerc
Duke of Brittany
2nd son of Robert II, Count of Dreux
Progenitor of the Dreux-Brittany branch -
Arthur II of Brittany
as Viscount of Limoges
Eldest son and heir of John II of Brittany -
Jean de Bretagne
Earl of Richmond
2nd son of John II of Brittany -
Pierre de Bretagne
Viscount of Léon
Youngest son of John II of Brittany
Earlier arms variant -
Pierre de Bretagne
Viscount of Léon
Youngest son of John II of Brittany
Later arms variant -
Guy de Penthièvre
Count of Penthièvre
Viscount of Limoges
Younger son of Arthur II of Brittany from his 1st marriage -
John of Montfort
Count of Montfort-l'Amaury
Son of Arthur II of Brittany from his 2nd marriage
Progenitor of the Montfort branch -
Jeanne de Penthièvre
Countess of Penthièvre
Viscountess of Limoges
Duchess of Brittany
Daughter and heiress of Guy de Penthièvre