The DuPeyrou Palace (L’Hôtel DuPeyrou) in Neuchâtel dates back to 1771. It bears the name of its first owner, Pierre-Alexandre DuPeyrou (1729-1794). He was a friend of Jean-Jacques Rousseau (1712-1778), who lived in the Neuchâtel area in 1762.
After the author’s death, he published the first complete edition of his works in Geneva in 1788. In 1790, he published the second part of the “Confessions” in Neuchâtel. He also left numerous manuscripts by Rousseau at the Bibliothèque publique et universitaire de Neuchâtel (now known as Espace Rousseau Neuchâtel).

Unknown artist, Pierre-Alexandre DuPeyrou. Collection: Bibliothèque publique et universitaire de Neuchâtel
Pierre-Alexandre DuPeyrou was born in the Dutch colony of Suriname, where his father, Pierre DuPeyrou (1702-1742), a Huguenot from France, served as a councillor at the Court of Justice. When his father died, his mother remarried de Neuchâtelois Philippe de Chambrier (1701-1756). He served in the colonial army of the Seven United Provinces. In 1748, the family moved to Neuchâtel, a Prussian principality, from 1707 (until 1857).

The building stood amid vineyards. The gardens extended to the lake. After the Juragewässerkorrektion (1868-1891), the lake sank several metres, and the dry area became a new residential part of the city.
The building was sold in 1799 to Frédéric de Pourtalès (1779-1861), another typical cosmopolitan Swiss. During the French/Napoleonic era (1798-1813), Marshal Louis-Alexandre Berthier occupied the palace from 1806 to 1813 (1753-1815).

When Frederick William III (1770-1840), King of Prussia, regained the title of Prince of Neuchâtel in 1813 (until 1857), he sold the building to the newly established canton of the Swiss Confederation.
The cantonal government sold it in 1816 to Denis de Rougemont (1759-1839). The city of Neuchâtel finally became the owner in 1858.
(Source and further information: www.dupeyrou.ch).