Saint-Clair-sur-Epte (, literally ''Saint-Clair on
Epte
The Epte () is a river in Seine-Maritime and Eure, in Normandy, France. It is a right tributary of the Seine, long. The river rises in Seine-Maritime in the Pays de Bray, near Forges-les-Eaux. The river empties into the Seine not far from Givern ...
'') is a
commune
A commune is an alternative term for an intentional community. Commune or comună or comune or other derivations may also refer to:
Administrative-territorial entities
* Commune (administrative division), a municipality or township
** Communes of ...
in the
Val-d'Oise
Val-d'Oise (, "Vale of the Oise") is a department in the Île-de-France region, Northern France. It was created in 1968 following the split of the Seine-et-Oise department. In 2019, Val-d'Oise had a population of 1,249,674.
department
Department may refer to:
* Departmentalization, division of a larger organization into parts with specific responsibility
Government and military
*Department (administrative division), a geographical and administrative division within a country, ...
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of Overseas France, overseas regions and territories in the Americas and the Atlantic Ocean, Atlantic, Pacific Ocean, Pac ...
. It is situated on the river
Epte
The Epte () is a river in Seine-Maritime and Eure, in Normandy, France. It is a right tributary of the Seine, long. The river rises in Seine-Maritime in the Pays de Bray, near Forges-les-Eaux. The river empties into the Seine not far from Givern ...
, 10 km southwest of
Gisors
Gisors () is a Communes of France, commune of Normandy (administrative region), Normandy, France. It is located northwest from the Kilometre Zero, centre of Paris.
Gisors, together with the neighbouring communes of Trie-Château and Trie-la-Vill ...
.
The
treaty of Saint-Clair-sur-Epte
The treaty of Saint-Clair-sur-Epte (911) is the foundational document of the Duchy of Normandy, establishing Rollo, a Norse warlord and Viking leader, as the first Duke of Normandy in exchange for his loyalty to the king of West Francia, followi ...
in 911 established
Rollo
Rollo ( nrf, Rou, ''Rolloun''; non, Hrólfr; french: Rollon; died between 928 and 933) was a Viking who became the first ruler of Normandy, today a region in northern France. He emerged as the outstanding warrior among the Norsemen who had se ...
, a Norse warlord and Viking leader, as the first
Duke of Normandy
In the Middle Ages, the duke of Normandy was the ruler of the Duchy of Normandy in north-western Kingdom of France, France. The duchy arose out of a grant of land to the Viking leader Rollo by the French king Charles the Simple, Charles III in ...
.
Henry I of England
Henry I (c. 1068 – 1 December 1135), also known as Henry Beauclerc, was King of England from 1100 to his death in 1135. He was the fourth son of William the Conqueror and was educated in Latin and the liberal arts. On William's death in ...
Ordericus Vitalis
Orderic Vitalis ( la, Ordericus Vitalis; 16 February 1075 – ) was an English chronicler and Benedictine monk who wrote one of the great contemporary chronicles of 11th- and 12th-century Normandy and Anglo-Norman England. Modern historia ...
, ''The Ecclesiastical History'', Book XII. (The Ecclesiastical History of Orderic Vitalis: Books XI, XII and XIII, Translated and edited by
Marjorie Chibnall
Marjorie McCallum Chibnall (27 September 1915 – 23 June 2012) was an English historian, medievalist and Latin translator. She edited the ''Historia Ecclesiastica'' by Orderic Vitalis, with whom she shared the same birthplace of Atcham in Shr ...