The Breton War of Succession was a struggle between the House of Montfort and House of Blois for control of the Duchy of Brittany. It came to be absorbed into the larger
Hundred Years' War between France and England, with England supporting the Montforts and France supporting the Blois family. At the time of the tournament, the war had become stalemated, with each faction controlling strongholds at different locations within Brittany, but occasionally making sorties into one another's territory.
Robert Bemborough, a knight leading the Montfortist faction which controlled
Ploërmel, was challenged to
single combat by
Jean de Beaumanoir, the captain of nearby
Josselin, controlled by the Blois faction. According to the chronicler Froissart, this purely personal duel between the two leaders became a larger struggle when Bemborough suggested a tournament between twenty or thirty knights on each side, a proposal that was enthusiastically accepted by de Beaumanoir. The motivation for the tournament is unclear. The earliest written sources present it as a purely chivalric exercise, undertaken to honour the ladies for whom the knights were fighting: referring to
Joan of Penthièvre (House of Blois) and
Joan of Flanders (House of Montfort). These women were leading the two factions at the time, as Joan's husband was in captivity and Joanna's was dead (her son was a young child at the time). This is the account given by the contemporary chroniclers
Jean le Bel and
Jean Froissart, both of whom present the conflict as purely a matter of honour with no personal animosity involved. Le Bel states that he had his information from one of the combatants. Froissart appears to simply copy le Bel's version. This version was standardised in
Pierre Le Baud's
History of the Bretons, written a century later, in which Bemborough's alleged cruelty is explained by his desire to avenge the death of
Thomas Dagworth. Whatever the cause, the fight was arranged in the form of an
emprise—an arranged
pas d'armes—which took place at an area known as the
chêne de Mi-Voie (the Halfway Oak) between Ploërmel and Josselin, between picked combatants. It was organised in the manner of a tournament, with refreshments on hand and a large gathering of spectators. Bemborough is supposed to have said, And let us right there try ourselves and do so much that people will speak of it in future times in halls, in palaces, in public places and elsewhere throughout the world. The words are recorded by Froissart: "the saying may not be authentic",
Johan Huizinga remarks, "but it teaches us what Froissart thought". Beaumanoir commanded thirty
Bretons, Bemborough a mixed force of twenty Englishmen (including
Robert Knolles and
Hugh Calveley), six German
mercenaries and four Breton partisans of Montfort. It is unclear whether Bemborough himself was English or German. His name is spelled in many variant forms, and is given as "Brandebourch" by Froissart, and also appears as "Bembro". His first name is sometimes given as Robert, sometimes as Richard. Both Le Bel and Froissart say he was a German knight, but historians have doubted this. All the Blois-faction knights can be identified, though Jean de Beaumanoir's given name is "Robert" in some versions. The names and identities of the Montfortists are much more confused and uncertain. ==Battle==