Jean de Chelles (working 1258–1265) was a master mason and sculptor who was one of the architect

Architect

An architect is a person trained in the planning, design and oversight of the construction of buildings. To practice architecture means to offer or render services in connection with the design and construction of a building, or group of buildings and the space within the site surrounding the...

s at the Cathedral of Nôtre Dame de Paris

Notre Dame de Paris

Notre Dame de Paris , also known as Notre Dame Cathedral, is a Gothic, Roman Catholic cathedral on the eastern half of the Île de la Cité in the fourth arrondissement of Paris, France. It is the cathedral of the Catholic Archdiocese of Paris: that is, it is the church that contains the cathedra of...

. On the exterior wall of the south transept a stone plaque is signed Johanne Magistro and dated February 1257, documenting the initiation of alterations to the transept and its portal. At 1265 he was replaced in the works by Master Pierre de Montreuil.

Jean de Chelles is credited with the south end of the transept

Transept

For the periodical go to The Transept.A transept is a transverse section, of any building, which lies across the main body of the building. In Christian churches, a transept is an area set crosswise to the nave in a cruciform building in Romanesque and Gothic Christian church architecture...

 of Nôtre Dame de Paris, the portal of the cloister

Cloister

A cloister is a rectangular open space surrounded by covered walks or open galleries, with open arcades on the inner side, running along the walls of buildings and forming a quadrangle or garth...

 and its rose window, and the portail Saint Etienne.

He is supposed to have worked with Pierre de Montreuil on the Sainte Chapelle and on the Cathedral of Saint Julien, Le Mans

Le Mans

Le Mans is a city in France, located on the Sarthe River. Traditionally the capital of the province of Maine, it is now the capital of the Sarthe department and the seat of the Roman Catholic diocese of Le Mans. Le Mans is a part of the Pays de la Loire region.Its inhabitants are called Manceaux...

. A Jean de Chelles was working on the Palais du Louvre

Palais du Louvre

The Louvre Palace , on the Right Bank of the Seine in Paris, is a former royal palace situated between the Tuileries Gardens and the church of Saint-Germain l'Auxerrois...

 in 1265, under the direction of Raymond du Temple.

The Pierre de Chelles, Maître de l'Œuvre de la cathédrale de Paris, who, with others, inspected the vaults and other work at Chartres cathedral in an official capacity, 9 September 1316, may have been a son or nephew, succeeding him at Nôtre Dame de Paris.