Porthos, Baron du Vallon de Bracieux de Pierrefonds is a fictional character in the novels The Three Musketeers, Twenty Years After and The Vicomte de Bragelonne by Alexandre Dumas, père.

Athos, the Comte de la Fère, had returned to his estate near Blois ; Porthos, Monsieur du Vallon, had married a lawyer's widow ; and Aramis became a priest, the Abbé d ' Herblay.

In The Three Musketeers his family name is du Vallon.

In Twenty Years After, after a successful wedding, he is first known as du Vallon de Bracieux de Pierrefonds, then he earns the title of baron.

* Name: Autoroute Robert-Bourassa since 2007 ( formerly named Autoroute du Vallon )

Other important buildings are the Bâtiment Vallon ( 1673 ) and the Hôtel du Raisin, which was built in 1574 and remodeled in 1630 and formerly served as city hall.

* Ecrire le livre: autour d ' Edmond Jabès, Actes du colloque de Cerisy, Seyssel, Champ Vallon, 1989.

These include the neolithic stilt houses on the banks of Lake Neuchâtel, the caves of Abri Baume du Four ( occupied from the Neolithic to the La Tène period ), tumuli of the Hallstatt period in the Vallon de Vers and two celtic villages at Les Buchilles.