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Origin and history

The Château d'Oissy, located in the commune of Oissy (département de la Somme, region Hauts-de-France), was a moving seigneury of the Baronie de Picquigny. In the 14th century, it belonged to the family of Picquigny, then passed to the family of Ailly in the 16th century. In 1609 Antoinette d'Ailly, wife of Henry de Fay, sold the estate to Antoine Trudaine, treasurer of France, whose family kept it until the Revolution. The present castle was built mainly in the 18th century for Francis II Trudaine, brother of the bishop of Senlis, François Firmin Trudaine.

The estate was seized during the Revolution, declared national and sold in 1795 after the emigration of the Marquis de Valanglart, the last lord of Oissy. The castle, rectangular in brick and stone style, dominated a park with a canal fed by the Saint-Landon River. A fire in 1946 completely destroyed the building, leaving only the walls of the ground floor, the gate, the pavilions and the park, listed as historical monuments in 2001.

The park of the Château d'Oissy has a rare feature for the eighteenth century: its canal is surrounded by trees, contrary to the usages of the era that favoured grassy slopes. The water room, fed by the Saint-Landon River, retained its original rectangular shape. Today, the estate is a private property, and only the remains and park testify to its aristocratic past.

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