Construction of the castral motte Milieu du Moyen Âge (XIᵉ-XIIIᵉ siècles) (≈ 1125)
Estimated period of construction of the fortified site.
Fin du XIXe siècle
Attribution of the name Motten-Morvan
Attribution of the name Motten-Morvan Fin du XIXe siècle (≈ 1995)
Name given according to a landowner.
28 novembre 1995
Registration for historical monuments
Registration for historical monuments 28 novembre 1995 (≈ 1995)
Official protection of the site and its basement.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
The entire archaeological site (castral motte and lower yard) as well as the land (ground and basement) on which it is situated: part of Parcel ZL 51 (ZL 51c, d, e) limited to 20 metres north of modern buildings: inscription by order of 28 November 1995
Key figures
Propriétaire terrien (fin XIXe siècle) - Donor of the name Motten-Morvan
Name related to the Morvan family.
Origin and history
The Corboulo archaeological site, also known as Motten-Morvan, is an ancient castral motte located in the municipality of Saint-Aignan, Morbihan, in the United Kingdom. Located on a spur overlooking the Blavet Valley, about 1 km south of the centre-bourg, this fortified site dates back to the middle of the Middle Ages. His current name, Motten-Morvan, was attributed to him at the end of the 19th century with reference to a landowner of the time.
The site is organized around a five-metre-high, elliptical-shaped, truncated motte located at the tip of the spur. A horse-drawn bassyard, bounded by a rise of land, is contiguous. The total area of 2.1 hectares was protected by dry ditches in the east and west. These defensive arrangements illustrate the typical fortification techniques of the 11th-XIIIth centuries in Brittany.
Ranked a historic monument by decree of 28 November 1995, the site includes the motte, the lower yard and the surrounding terrain (ground and basement), limited to 20 meters north of modern buildings. Although the local legend attributes its construction to the Templars, archaeological studies confirm that it is before them. The site remains a major testimony of feudal occupation in interior Brittany.
Today, Corboulo offers a preserved example of medieval castral architecture, with remains still visible despite erosion and landscape transformations. Its designation as historic monuments underscores its heritage importance for understanding the political and military dynamics of the region in the Middle Ages.
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