List of Famous people with last name Brittany

Yolande of Brittany was the ruler of the counties of Penthièvre and Porhoet in the Duchy of Brittany. Yolande had been betrothed to King Henry III of England in 1226 at the age of seven years, but married Hugh XI of Lusignan, the half-brother of Henry III. Through Hugh, she became Countess of La Marche and of Angoulême. She was the mother of seven children. From 1250 to 1256, she acted as Regent of La Marche and Angoulême for her son, Hugh XII of Lusignan.

Conan III, also known as Conan of Cornouaille and Conan the Fat was duke of Brittany, from 1112 to his death. He was the son of Duke Alan IV and Ermengarde of Anjou.

Joan of Penthièvre or Joan the Lame reigned as Duchess of Brittany together with her husband, Charles of Blois, between 1341 and 1364. Her ducal claims were contested by the House of Montfort, which prevailed only after an extensive civil war, the War of the Breton Succession. After the war, Joan remained titular Duchess of Brittany to her death. She was Countess of Penthièvre in her own right throughout her life.

Peter II (1418–1457), was Duke of Brittany, Count of Montfort and titular earl of Richmond, from 1450 to his death. He was son of Duke John VI and Joan of France, and a younger brother of Francis I.

John I, known as John the Red due to the colour of his beard, was Duke of Brittany from 1221 to his death and 2nd Earl of Richmond in 1268.

Alan II, nicknamed Wrybeard or Twistedbeard, Alan Varvek in Breton, was Count of Vannes, Poher, and Nantes, and Duke of Brittany from 938 to his death. He was the grandson of King Alan the Great by Alan's daughter and her husband Mathuedoï I, Count of Poher. He expelled the Vikings/Norsemen from Brittany after an occupation that lasted from 907 to about 939.

Conan II of Rennes was Duke of Brittany, from 1040 to his death. Conan was the eldest child and heir of Alan III, Duke of Brittany by his wife Bertha of Blois, and member of the House of Rennes. He was the elder brother of Hawise, who succeeded him as suo jure duchess.

Alan III of Rennes was Count of Rennes and duke of Brittany, by right of succession from 1008 to his death.

Lady Joan Holland was Duchess of Brittany as the second wife of John IV, Duke of Brittany. She was the daughter of Joan of Kent and Thomas Holland, 1st Earl of Kent. Her mother's second husband was Edward the Black Prince, and the child of that marriage was King Richard II of England.