Montfort of Brittany in the context of John III, Duke of Brittany

Anne of Brittany (Breton: Anna; 25/26 January 1477 – 9 January 1514) was reigning Duchess of Brittany from 1488 until her death, and Queen of France from 1491 to 1498 and from 1499 to her death. She was the only woman to have been queen consort of France twice. During the Italian Wars, Anne also became Queen of Naples, from 1501 to 1504, and Duchess of Milan, in 1499–1500 and from 1500 to 1512.

Anne was raised in Nantes during a series of conflicts in which the King of France sought to assert his suzerainty over Brittany. Her father, Francis II, Duke of Brittany, was the last male heir of the House of Montfort. Upon his death in 1488, Anne became duchess regnant of Brittany, countess of Nantes, Montfort, and Richmond, and viscountess of Limoges. She was only 11 at that time, but she was already considered a desirable prospect for marriage because of Brittany's strategic position. The next year, she married Maximilian I of Austria by proxy, but Charles VIII of France saw this as a threat since his realm was located between Brittany and Austria. He started a military campaign which eventually forced the duchess to renounce her marriage.

The War of the Breton Succession (French: guerre de Succession de Bretagne; Breton: Brezel hêrezh dugelezh Breizh) or Breton Civil War was a conflict between the Counts of Blois and the Montforts of Brittany for control of the 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 Joans (French: guerre des deux Jeannes) due to the involvement of two rival duchesses of that name, Joan of Flanders and Joan of Penthièvre.

The war formed an integral part of the early Hundred Years' War due to the proxy involvement of the French and English monarchs in the conflict; the French supported the Blois (female heir) whilst the English backed the Montforts (male heir). The rival kings supported the duke of the principle opposite to their own claims to the French throne—the Plantagenet having claimed it by female succession, and the Valois by male succession. Montfort was ultimately successful following the Battle of Auray in 1364 but, in a surprising turn of events, pledged his loyalty to the king of France and not to the Plantagenet king of England who had supported him.

Between Limoges, Brive and Périgueux, the viscounts of Limoges (French: vicomtes de Limoges), also called viscounts of Ségur created a small principality, whose last heir was Henry IV. Ségur was the main home of these viscounts, in the heart of their domain. The viscounty went from the Limoges-Ségur family to the House of Montfort in Brittany, then to the Albrets and eventually to the Bourbons.