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|Duke of Brittany|
|Reign||27 August 1312 –30 April 1341|
|Successor||disputed between: John of Montfort |
and Joanna with Charles I
|Born||8 March 1286|
Château de Champtoceaux
|Died||30 April 1341 55) (aged|
Notre-Dame des Carmes
|Spouse||Isabella of Valois|
Isabella of Castile
Joan of Savoy
|Father||Arthur II, Duke of Brittany|
|Mother||Marie, Viscountess of Limoges|
John III the Good (in Breton Yann III, in French Jean III; 8 March 1286 –30 April 1341) was Duke of Brittany, from 1312 to his death and 5th Earl of Richmond from 1334 to his death. He was the son of Duke Arthur II of Brittany and Mary of Limoges, his first wife. John was strongly opposed to his father's second marriage to Yolande of Dreux, Queen of Scotland and attempted to contest its legality.
In 1297, John was married to his first wife Isabella of Valois,eldest child of Charles, Count of Valois and his first wife Margaret of Naples. At the time of their marriage John was eleven years old and his bride five. She died childless in 1309. In 1310, John married his second wife, Isabella of Castile. She died childless in 1328.
In 1329, John married his third wife Joan of Savoy. He predeceased his third wife by three years and died childless. He was unwilling to cede the Duchy of Brittany to his half-brother John of Montfort, son of his hated step-mother Yolande of Dreux. He wished to leave the duchy to the french King Philip VI, but his nobles objected. The marriage of his niece Joanna of Dreux to Charles of Blois gave Charles a plausible claim to the duchy, but the matter was unresolved at John's death.
After his death, John of Montfort claimed his rights as duke of Brittany, but King Philip VI supported the Blois faction, and the Breton War of Succession (1341–1364) was triggered. The Breton Civil War was fought between the House of Blois and the House of Montfort. It became part of the Hundred Years' War, as England supported the Montfort faction, which won, against the House of Blois, which was supported by France.
The Duchy of Brittany was a medieval feudal state that existed between approximately 939 and 1547. Its territory covered the northwestern peninsula of Europe, bordered by the Atlantic Ocean on the west, the English Channel to the north. It was less definitively bordered by the Loire River to the south, and Normandy and other French provinces to the east. The Duchy was established after the expulsion of Viking armies from the region around 939. The Duchy, in the 10th and 11th centuries, was politically unstable, with the dukes holding only limited power outside their own personal lands. The Duchy had mixed relationships with the neighbouring Duchy of Normandy, sometimes allying itself with Normandy, and at other times, such as the Breton-Norman War, entering into open conflict.
Arthur II, of the House of Dreux, was Duke of Brittany from 1305 to his death. He was the first son of John II and Beatrice, daughter of Henry III of England and Eleanor of Provence.
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.
The War of the Breton Succession was a conflict between the Counts of Blois and the Montforts of Brittany for control of the Sovereign Duchy of Brittany, then a fief of the Kingdom of France. It was fought between 1341 and 12 April 1365. It is also known as the War of the Two Jeannes due to the involvement of two queens of that name.
John of Montfort, sometimes known as John IV of Brittany, and 6th Earl of Richmond from 1341 to his death. He was the son of Arthur II, Duke of Brittany and his second wife, Yolande de Dreux. He contested the inheritance of the Duchy of Brittany by his niece, Joan of Penthièvre, which led to the War of the Breton Succession, which in turn evolved into being part of the Hundred Years' War between England and France. John's patron in his quest was King Edward III of England. He died in 1345, 19 years before the end of the war, and the victory of his son John IV over Joan of Penthièvre and her husband, Charles of Blois.
Charles of Blois-Châtillon "the Saint", was the legalist Duke of Brittany from 1341 to his death via his marriage to Joan of Penthiève, holding the title against the claims of John of Montfort. The cause of his possible canonization was the subject of a good deal political maneuvering on the part of his cousin, Charles V of France who endorsed it, and his rival, Montfort, who opposed it. The cause fell dormant after Pope Gregory XI left Avignon in 1376, but was revived in 1894. Charles of Blois was beatified in 1904.
John IV the Conqueror KG, was Duke of Brittany and Count of Montfort from 1345 until his death and 7th Earl of Richmond from 1372 until his death.
The now-extinct title of Earl of Richmond was created many times in the Peerage of England. The earldom of Richmond was initially held by various Breton nobles associated with the Ducal crown of Brittany; sometimes the holder was the Breton Duke himself, including one member of the cadet branch of the French Capetian dynasty. The historical ties between the Ducal crown of Brittany and this English Earldom were maintained ceremonially by the Breton dukes even after England ceased to recognize the Breton Dukes as Earls of England and those dukes rendered homage to the King of France, rather than the English crown. It was then held either by members of the English royal families of Plantagenet and Tudor, or English nobles closely associated with the English crown. It was eventually merged into the English crown during the reign of Henry VII and has been recreated as a Dukedom.
Yolande of Aragon was Duchess of Anjou and Countess of Provence by marriage, who acted as regent of Provence during the minority of her son. She was a daughter of John I of Aragon and his wife Yolande of Bar. Yolande played a crucial role in the struggles between France and England, influencing events such as the financing of Joan of Arc's army in 1429 that helped tip the balance in favour of the French. She was also known as Yolanda de Aragón and Violant d'Aragó. Tradition holds that she commissioned the famous Rohan Hours.
Joanna of Flanders was Duchess of Brittany by her marriage to John of Montfort. Much of her life was taken up in defence of the rights of her husband and, later, son to the dukedom, which was challenged by the House of Blois during the War of the Breton Succession. Known for her fiery personality, Joanna led the Montfortist cause after her husband had been captured, and began the fight-back, showing considerable skill as a military leader.
Olivier Le Vieux de Clisson, dit Olivier V de Clisson, nicknamed "The Butcher", was a Breton soldier, the son of Olivier IV de Clisson. His father had been put to death by the French in 1343 on the suspicion of having willingly given up the city of Vannes to the English.
In the 11th and 12th centuries the Countship of Penthièvre in Brittany belonged to a branch of the sovereign House of Brittany. It initially belonged to the House of Rennes. Alan III, Duke of Brittany, gave it to his brother Eudes in 1035, and his descendants formed a cadet branch of the ducal house.
Yolande of Dreux was a sovereign Countess of Montfort from 1311 until 1322. Through her first marriage to Alexander III of Scotland, Yolande became Queen consort of the Kingdom of Scotland. Through her second marriage to Arthur II, Duke of Brittany, she became Duchess Consort of Brittany.
The House of Montfort was a Breton-French noble family, which reigned in the Duchy of Brittany from 1365 to 1514. It was a cadet branch of the House of Dreux; it was thus ultimately part of the Capetian dynasty. It should not be confused with the older House of Montfort which ruled as Counts of Montfort-l'Amaury.
The House of Dreux was a cadet branch of the Capetian dynasty. It was founded by Robert I, Count of Dreux, a son of Louis VI of France, who was given the County of Dreux as his appanage.
The Battle of Champtoceaux, often called the Battle of l'Humeau, was the opening action of the 23-year-long War of the Breton Succession, a dynastic conflict in Brittany which became inevitably embroiled in the Hundred Years War between England and France. This battle should have decided the war at a stroke, as John of Montfort, the leader of one faction, was made prisoner. However his wife, Joanna of Flanders, and young son John escaped imprisonment. Their escape and continued support from his ally, England, allowed continued resistance to flourish and eventually turn the tide.
Isabella of Brittany was a daughter of John V, Duke of Brittany, and his wife, Joan of Valois. Isabella was a member of the House of Dreux.
The Lordship of Léon, later Principality of Léon was a former Breton fief located in the Léon province, in north-western Brittany, which corresponds roughly to the French département Finistère. This lordship was created after the Viscounty of Léon was divided into a viscounty and the lordship at the end of the 12th century. The lordship of Léon was a large fief made of about sixty parishes and trèves. The estates of the lordship are located around the valley of the Élorn river, the town of Landerneau and the castle of La Roche-Maurice. The lordship was initially held by the junior branch of the Viscounts of Léon, which was founded by Harvey I. After Harvey VIII died without issue, the fief was inherited by the Viscounts of Rohan. In the middle of the 16th century the fief became known as "Pincipality of Léon". Landerneau, Landivisiau, Daoulas, Coat-Méal, Penzé and La Roche-Maurice were the seats of the jurisdictions of this huge Breton lordship.
Harvey VII of Léon was a Breton lord, son of Harvey VI, Lord of Léon and his wife Joanna of Montmorency. He succeeded his father as Lord of Léon in 1337. He was also Lord of Noyon-sur-Andelle. The Lords of Léon were a junior branch of the Viscounts of Léon which was founded by Harvey I, second son of Guihomar IV, Viscount of Léon. Harvey VII won fame during the War of the Breton Succession.
John III, Duke of Brittany
Cadet branch of the Capetian DynastyBorn: 8 March 1286 Died: 30 April 1341
| Duke of Brittany |
| Viscount of Limoges |
|Peerage of England|
John of Brittany
| Earl of Richmond |
Robert III of Artois