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Origin and history

The Manor House of La Bage de Trégouët, located on Rue de l'Hôtellerie in Corseul, is a former abbey transformed into a manor house and renovated in the 19th century. This historic building belonged to influential families in the region, including the Labbé (from the 13th to the 17th century), the Tréguët (XVIIth–XVIIIth centuries), and the L-Estang du Rusquec. Its architecture reflects the successive transformations linked to its different owners, integrating medieval and modern elements.

Corseul, where this mansion stands, is a commune marked by an exceptional Gallo-Roman heritage, notably as the former capital of the Coriosolites, a Gallic people. The local territory, rich in archaeological remains such as the temple of Mars or the commercial district of Monterfil, offers a deep historical setting. The manor house is thus part of a landscape where ancient, medieval and rural heritages are mixed, typical of inland Brittany.

The Corsican region, dominated by an agricultural economy and artisanal activities, saw its social fabric evolve around manor houses such as La Bage de Trégouët. These homes served as administrative or residential centres for local noble families, playing a key role in feudal and post-revolutionary organization. The mansion, although less documented than the Gallo-Roman nearby sites, illustrates this transition between seigneurial power and rural modernity.

No detailed archaeological excavation or study seems to have specifically targeted this mansion, unlike the ancient sites of Corseul. Its history therefore remains partly related to that of the families who owned it, as well as to the general evolution of the commune, marked by territorial recompositions (such as the transfer of villages to Plancoët in 1841) and economic dynamics, particularly around granite extraction and agriculture.

The local context in the 19th century, the period of the last renovations of the mansion, was that of a changing rural Brittany, with the decline of traditional activities such as bank furnaces and the emergence of new infrastructures, such as Brandefert quarries. Corseul, although losing part of its territory, retained a strong identity, rooted in its Gallo-Roman past and its role as a central town for the surrounding communes.

Today, the Manor House of La Bage de Tréguët is integrated into a diverse heritage landscape, where ancient remains coexist, religious buildings (such as St. Peter's Church) and natural sites. Its discreet existence contrasts with the reputation of neighbouring archaeological sites, but it remains a witness to the successive strata of occupation and power in this part of the Côtes-d'Armor.

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