The first years of Louis's life were spent in the care of his mother. Only after the death of his elder brother Charles on 13 January 1401 did he take on a political importance by inheriting the Dauphiné. On 14 January, King Charles formally invested Louis with the Duchy of Guyenne, which was also raised into a peerage. On 28 February 1402, Charles juridically emancipated his son and Louis did homage for Guyenne. Nonetheless, the young dauphin did not have his own household or treasury, but the monies collected by the treasurer-general of the Dauphiné were deposited with his mother. The revenues of Guyenne were overseen by John, Duke of Berry, as lieutenant-general of Languedoc. On 26 April 1403, Charles decreed that if Louis inherited the throne while still a minor, he would not be under the traditional regency, but the queen mother, the duke of Orléans and the dukes of Bourbon, Burgundy and Berry would guide him. On 28 April, the king agreed to the marriage of Louis and Margaret, daughter of John, Count of Nevers, and granddaughter of the duke of Burgundy, who had previously been betrothed to the Dauphin Charles in 1395. On 4 July, another royal ordinance confirmed the revenues of Guyenne to the duke of Berry for the rest of his life, to revert to Louis on the duke's death. On 30 January 1404, the king ordered the establishment of a household and treasury separate from Isabeau's for the seven-year-old Louis.
Having his own household
Although Louis's marriage contract had been signed before a great council of the realm on 5 May 1403, the Duke of Orléans, who had hoped his daughter would marry the dauphin, absented himself. The marriage of Louis's sister Michelle to Margaret's brother Philip, Count of Charolais, was also finalised at this council. Since Louis and Margaret were related to within the prohibited degree, a papal dispensation had to be obtained. As a consequence, the couple was not married until 30 August 1404 in the cathedral of Notre-Dame de Paris. As Charles VI descended into madness, influence over and control of Louis became of increasing importance to the parties which sought to control royal policy. In 1404, Louis's father-in-law succeeded as duke of Burgundy. In 1405, the duke of Orléans, in cooperation with the queen, perpetrated the "first kidnapping of the Dauphin" in order to separate Louis from the influence of his grandfather-in-law. As the duke of Burgundy approached Paris on a royal summons, the duke of Orléans and the queen left the city and sent for Louis to accompany them. The dauphin was ill, but was brought by boat and then by litter to Juvisy, where he was intercepted by the lord of Saint-Georges, a vassal of his father-in-law. The duke of Burgundy and the count of Charolais then met him and escorted him back to Paris in his litter. There the young duke was put up in the Louvre, because it was easier to defend than the Hôtel Saint-Pol. In 1409, Jean de Nielles, already chancellor to the queen and a knight known for his loyalty to the Burgundian duke, was made Louis's chancellor also. The duke of Burgundy also appointed Pierre de Fontenay, Louis's maître d'hôtel, while the duke of Orléans chose his chamberlains, alternating between the lords of Blaru and Offemont. The influence of the dukes is apparent even in Louis's buying habits: he frequented the merchants who were the suppliers of Burgundy and Orléans.
War and death
During civil war between the Armagnacs and the Burgundians, Louis was credited with intervening to bring about peace at Chartres in 1409, at Auxerre in 1410 and again in 1412. The peace of Auxerre was mocked by contemporaries as a paix fourrée, a peace made in bad faith. Between the assassination of the duke of Orléans in 1407 and the revolt of the Cabochiens in 1413, the duke of Burgundy dominated the court of the duke of Guyenne. During the revolt of 1413, he replaced his son-in-law's treasurer, François de Nerly, with a man of his own loyalty, Jean de Noident, but he then had to flee Paris. In December 1413, Louis himself pleaded to be rescued from the city, since he did not trust the triumphant Armagnacs. Louis was not present at the Battle of Agincourt, remaining with his father Charles VI at Rouen. He died 18 December 1415, possibly of dysentery, as recorded by the monk chronicler Michel Pintoin of the Basilica of St Denis.
In literature and film
Louis was probably the original recipient of the Chateauroux Breviary. It was also for him that Christine de Pizan wrote her Livre du corps de policie and Livre de paix as instructions for a young ruler. Louis appears as the Dauphin in William Shakespeare's Henry V. He has been represented in film by Max Adrian in 1944, Keith Drinkel in 1979, Michael Maloney in 1989, Edward Akrout in 2012 and Robert Pattinson in 2019.