Louis VI (1 December 1081 – 1 August 1137), called the Fat (French: le Gros) or the Fighter (French: le Batailleur), reigned as King of the Franks from 1108 to 1137. Like his father Philip I, Louis made a lasting contribution to centralizing the institutions of royal power. He spent much of his twenty-nine-year reign fighting – either against the "robber barons" who plagued the Île-de-France, or against Henry I of England for the English continental possessions in Normandy. Nonetheless, Louis VI managed to reinforce his influence considerably, often resorting to force to bring lawless knights to justice, and was the first member of the House of Capet to issue ordonnances applying to the whole of the kingdom of France.
Louis was a warrior-king, but by his forties his weight had become so great that it was increasingly difficult for him to lead in the field (hence the epithet "le Gros"). Details about his life and person are preserved in the Vita Ludovici Grossi Regis ("The Life of King Louis the Fat"), a panegyric composed by his loyal advisor, Suger, abbot of Saint Denis.
Louis was born around 1081 in Paris, the son of Philip I of France and Bertha of Holland.
Abbot Suger of Saint Denis, who wrote a biography of Louis VI, tells us: "In his youth, growing courage matured his spirit with youthful vigour, making him bored with hunting and the boyish games with which others of his age used to enjoy themselves and forget the pursuit of arms." And "How valiant he was in youth, and with what energy he repelled the king of the English, William Rufus, when he attacked Louis' inherited kingdom."
In 1098, Louis was knighted by Guy I of Ponthieu. On Christmas Day 1100 he attended the royal court of Henry I of England in London, where according to Symeon of Durham, Louis appeared as "king elect of the Franks". By 1103 his father Philip I had already associated him with the government of the kingdom.
Louis married Lucienne de Rochefort, the daughter of his father's seneschal, in 1104, but repudiated her three years later. They had no children. On 3 August 1115 Louis married Adelaide of Maurienne, daughter of Humbert II of Savoy and of Gisela of Burgundy, and niece of Pope Callixtus II. They had eight children. Adelaide was one of the most politically active of all France's medieval queens. Her name appears on 45 royal charters from the reign of Louis VI. During her time as queen (1115–1137), royal charters were dated with both her regnal year and that of the king.
Suger became Louis's adviser even before he succeeded his father as king at the age of 26 on 29 July 1108. Louis's half-brother prevented him from reaching Rheims, and so Daimbert, Archbishop of Sens, crowned him in the cathedral of Orléans on 3 August. Raoul le Vert (Ralph the Green), Archbishop of Rheims, sent envoys to challenge the validity of the coronation and anointing, but to no avail.
When Louis ascended the throne, the Kingdom of France was a collection of feudal principalities. Beyond the Isle de France the French kings had limited authority over the great duke and counts of the realm but slowly Louis began to change this and assert Capetian power. This process would take two centuries to complete but began in the reign of Louis VI and his father Philip I.
The second great challenge facing Louis was to counter the rising power of the Anglo-Normans under their capable new king, Henry I of England.
Struggles with the robber barons
From early in his reign (and previously during his father's reign) Louis faced the problem of the robber barons who resisted the King's authority and engaged in brigandry, making the area around Paris unsafe. From their castles, such as Le Puiset, Châteaufort, and Montlhéry, these robber barons would charge tolls, waylay merchants and pilgrims, terrorize the peasantry and loot churches and abbeys. The latter deeds drew the most ire of the writers of the day, who were mostly clerics.
In 1108, soon after he ascended the throne, Louis engaged in war with Hugh of Crécy, who was plaguing the countryside and had captured Eudes, Count of Corbeil, and imprisoned him at La Ferté-Alais. Louis besieged that fortress to free Eudes.
Also in 1108, a seigneur named Aymon Vaire-Vache seized the lordship of Bourbon from his nephew, Archambaud, a minor. Louis demanded the boy be restored to his rights but Aymon refused the summons. Louis raised his army and besieged Aymon at his castle at Germigny-l'Exempt, forcing its surrender.
In early 1109, Louis besieged his half-brother, Philip, the son of Bertrade de Montfort, who was involved in brigandry and conspiracies against the King, at Mantes-la-Jolie. Philip's plots included the lords of Montfort-l'Amaury. Amaury III de Montfort held many castles which, when linked together, formed a continuous barrier between Louis and vast swathes of his domains, threatening all communication south of Paris.
In 1121, Louis established the marchands de l'eau, to regulate trade along the Seine.
In 1122, Aimeri, Bishop of Clermont, appealed to Louis after William VI, Count of Auvergne, had driven him from his episcopal town. When William refused Louis' summons, Louis raised an army at Bourges, and marched into Auvergne, supported by some of his leading vassals, such as the Counts of Anjou, Brittany, and Nevers. Louis seized the fortress of Pont-du-Chateau on the Allier, then attacked Clermont, which William was forced to abandon. Aimeri was restored. Four years later William rebelled again and Louis, though his increasing weight made campaigning difficult, marched again. He burned Montferrand and seized Clermont a second time, captured William, and brought him before the court at Orléans to answer for his crimes.
Some of the outlaws became notorious for their cruelty, the most notable being Thomas, Lord of Coucy, who was reputed to indulge in torture of his victims, including hanging men by their testicles, cutting out eyes, and chopping off feet. Guibert of Nogent noted of him, "No one can imagine the number of those who perished in his dungeons, from starvation, from torture, from filth."
Another notable brigand was Hugh, Lord of Le Puiset, who was ravaging the lands around Chartres. In March 1111, Louis heard charges against Hugh at his court at Melun from Theobald II, Count of Champagne, the Archbishop of Sens, and also from bishops and abbots. Louis commanded Hugh to appear before him to answer these charges, but Hugh evaded the summons. Louis stripped him of his lands and titles and laid siege to Le Puiset. After a fierce struggle, Louis took the castle and burned it to the ground, taking Hugh prisoner.