Then, between 1620 and 1623, a Louis XIII château was built on the same site by Claude de Montescot and his son, Jacques.

In 1783, the d’Aligre family bought Baronville. Originally from Chartres, this family had already given two great chancellors of France and Gardes des Sceaux: Etienne Ist, Marquis d’Aligre, Chancellor of France from 1624 to 1635, and Etienne II, Marquis d’Aligre, Chancellor from 1674 to 1677. Etienne Francois, the Marquis d’Aligre and Comte de Marans spent a considerable part of his fortune in restoring the château and its former gardens.

The Marquis d’Aligre was the first president of the Parliament of Paris, and thus held the heavy responsibility of passing judgement on the famous Affaire du Collier. He was remembered as man of ‘integrity and enlightenment’ in the debates that preceded the French Revolution. He died during emigration to London and then Brunswick. His relationship with his farmers and tenants was harmonious, so much so that, although the revolutionary government had put the possessions of émigrés up for sale as ‘national property’, the farmers collectively bought back the estate to give back to the new marquis, the younger Etienne V d’Aligre. After his return from exile, the latter thanked them by giving each part of his most fertile farmland.

Etienne V, Marquis d’Aligre, Pair de France and Comte de Marans is remembered for the steps that he took to improve the population’s well-being, which had been considerably compromised by the revolutionary turbulence and the Napoleonic Wars. He set up, at his own expense, the Asile d’Aligre near Chartres, which had 300 beds (today called the Aligre Foundation), and founded several schools. His daughter married the Marquis de Pomereu, whose family belonged to the most prestigious of Normandy.

The property of the d’Aligre family, as well as their name and titles, were transferred to the House of Pomereu by royal command on 21 December 1825. Armand, Marquis de Pomereu d’Aligre, destroyed the second château in 1867 and commissioned the architect Léon de Sanges to design the present château, which was finished in 1868. The same workers worked on the roofs of Baronville, of the Mont-St-Michel and on the Statue of Liberty in New York (USA).

Built for receptions, the first to use it were Bavarian soldiers in1870.