The commune was once an important stronghold reigning over the whole natural and historic province ofThymerais.
Born of the fierce determination of its first lords to face the threat brought by theDuke of Normandy upon theKingdom of France, and devastated and much fought over through the ages, thecastle that rose out of it was eventually demolished, but the city remained. It gradually lost its importance and a dynastic feud was the center of which it was dismembered, so that it became a barony in the eighteenth century, although it was far from having the same extent that it did in the thirteenth century.
The city known since the end of theSecond World War subsequently went through a fragile revival by taking advantage of its location due to its proximity toParis, and the employment areas ofChartres andDreux. It managed to attract some industrial enterprises to retain part of its business while achieving a low but steady demographic development. Already a head of itsCanton, belonging to theDrouais region, the city became in 2003 the center of the Community of communes of Thymerais.
Former capital ofThymerais having taken over this status from its neighbor Thimert, Châteauneuf-en-Thymerais is located south ofNormandy and Drouais, west and north of the Beauce and Chartrain and east of the Perche . The city was built following the vicissitudes of history in a forested area called, around 600 or even at a much earlier period, the Perche. This designation did not yet apply at the early eleventh century to the political or administrative divisions. However, the woodland region of the Perche was divided between the County of Corbon (Mortagne), the Barony of Châteauneuf, the county and bishopric of Chartres, the Viscounty of Châteaudun and County of Vendôme.[3] Progressive clearing of this forest caused the retreat of the Perche, giving place to the Thymerais. A crossroads, the town is now the headquarters of the canton and the center of the community of communes of the Thymerais.
1910 Foucault à Dreux postcard depicting Châteauneuf-en-Thymerais
In 1058, Albert Ribaud, lord ofThymerais, took a stand againstWilliam the Conqueror,Duke of Normandy and future king of England, the latter seized Thimert and left there a governor, but the following year, Henry I King of France,took the castle and razed it. It was reconstructed by Gaston, brother of Albert Ribaud built a short distance in a clearing in the woods, a fort named Chastel-neuf. It was formed around a village of the same name, which soon became the capital of Thymerais.
From a feudal standpoint,[5] in 1200 theThymerais formed one great fief whose center was Châteauneuf-en-thymerais. The Châtellerie of Châteauneuf-en-Thymerais covered an area roughly bounded by the north by the riverAvre and by the riverEure to the south and east. TheChâtellainie covered more than 80 villages within these limits but also villages inEure: Acon, Armentieres-sur-Avre in Saint-Martin-du-Vieux-Verneuil, Saint-Victor-sur-Avre, and the Department ofOrne: Charencey, Moussonvilliers, Normandel and La Trinite-sur-Avre, all in the Township of Tourouvre.
The castle was sacked in 1169 by KingHenry I of England, following the destruction of Chennebrun, located on the left bank of the Avre the previous year by the King of France. The castle was again attacked byHenry II of England, who burned the fortress, but it was rebuilt in 1189 by Hughes III du Chatel, lord ofThymerais. Hughes III received the castle from KingLouis VII of France on the occasion of the inauguration of the fair of Saint-Jacques Boutaincourt. St. Thomas Chapel was built at that time in the suburbs of the town (now St. Thomas Road between Chartres and Nogent-le-Roi). Closed for worship since theFrench Revolution, it was built in honor of St.Thomas Becket,Archbishop of Canterbury.
In 1269, KingLouis IX of France or St. Louis, came to Thimert and went to the castle of Châteauneuf. At that time, a major exhibition was held under the patronage of Saint-Arnoult, held in July in a suburb of the city, near Grande Noé.
Châteauneuf was elevated in 1314 to the peerage as a barony-vassal of theKingdom of France, directly under the authority of the Tower of theLouvre.[6] The barony was then composed of four castellanies: Châteauneuf, Brezolles, Senonches and Champrond en Gâtine. The lordship of Champrond en Gastine was acquired in June 1310 by Charles I, Count of Alençon and Perche, through an exchange withEnguerrand de Marigny, the king's chamberlain, and Havis de Mons, his wife, who held it for Gaucher de Chatillon, Comte de Ponthieu. The barony of Châteauneuf-en-Thimerais stayed a part of the County and later Duchy ofAlençon until its extinction in 1525 withCharles IV of Alençon.
During theHundred Years War, the Bourguignons, under the command of Maréchal de Longny took the city. Recovering thereafter, it was again captured byWarwick in 1418, andHenry V of England installed there one of his lieutenants. The city was finally taken back byJean II, Duke of Alençon after the battle of Verdun in 1424.
In August 1449, KingCharles VII of France came to Châteauneuf and stayed three days at the castle.
On the death ofCharles IV of Alençon in 1525, the king seized their land, most of which had been given to its prerogative and ancestors had, for lack of male descendants, returned to the Crown under the law of appendages. But the barony of Châteauneuf was not part of the prerogative of the Duc d'Alençon. CountCharles II of Alençon had inherited one third of the barony from his brother Louis, Count of Chartres, by sharing it in 1335.Pierre II of Alençon later acquired the other two thirds in 1370. Champrond finally was acquired by Charles, in 1310. Later the two sisters of the Duke Charles,Françoise of Alençon, wife ofCharles IV de Bourbon, duke of Vendome, andAnne of Alençon, Marquise ofMontferrat, opposed the seizure by the king of the assets of their brother. There followed a trial that was not completed until 1563 by a double transaction between KingCharles IX of France and the descendants of Anne and Françoise d'Alençon, which ended with the king accepting their claims and restoring the barony of Châteauneuf-in-Thimerais. This was divided among the heirs of Françoise d'Alençon, who took Champrond and Châteauneuf[7] and Louis de Gonzague, grandson of Anne of Alençon, Marquise of Montferrat (now the same year by the Duke of Nivernais marriage withHenriette of Cleves) received the cities, towns and castellanies Senonches and Brezolles en Thimerais which were detached from the barony of Châteauneuf. In February 1500 King Charles IX had erected the lordships of Brezolles Senonches, sold in his name to the principality of Mantua, in favor of Louis de Gonzague, father of Charles[8] and were erected into a principality under the name of Mantua.
In 1591, the Comte de Soissons, plundered the castle along with those of Arpentigny and La Ferte-Vidame.
The castle was never rebuilt and returned to theroyal domain. Châteauneuf was annexed and the lords resided at Maillebois until about the second half of the eighteenth century. The stronghold of Thymerais meanwhile gradually was dismantled so that by the late eighteenth century the barony of Châteauneuf-en-Thymerais was nowhere near the same extent as it was in the thirteenth century.
In the late eighteenth century Châteauneuf was dependent on the election of Verneuil-sur-Avre andgenerality of Alençon.
It was the chief town of the district from 1790 to 1795, and took the name of Puy-la-Montagne to the revolutionary era.
The last traces of the castle moat, were gradually filled during the nineteenth century. The last traces of them were erased in the first half of the twentieth century to make way for new roads (including the streets of Pont Tabarin, Petite Friche, and Dulorens).
In the twentieth century the city suffered through bombardment in 1940 during theBattle of France. When the war was over, Châteauneuf saw the arrival of families of U.S. soldiers housed in a subdivision south of the city and many people worked on the U.S. air base south of Crucey Brezolles. They left in 1966 upon the withdrawal of French forces from the NATO Command, as decided byDe Gaulle, in effect expelling all U.S. bases from the country.