Initial construction XVe siècle (≈ 1550)
Built circular corner towers.
XVIIe siècle
Major renovations
Major renovations XVIIe siècle (≈ 1750)
Louis XIII Pavilion, dovecote, fountain and mail.
1er quart XVIIIe siècle
Complementary arrangements
Complementary arrangements 1er quart XVIIIe siècle (≈ 1825)
Period not detailed in sources.
XIXe siècle
Symetization of the commons
Symetization of the commons XIXe siècle (≈ 1865)
Double hook and South reorganization.
15 juin 1976
First protection
First protection 15 juin 1976 (≈ 1976)
Facades and roofs inscribed.
27 janvier 2003
Extension of protection
Extension of protection 27 janvier 2003 (≈ 2003)
Pavilion, fountain, pool and gardens.
29 mars 2004
Classification of the dovecote
Classification of the dovecote 29 mars 2004 (≈ 2004)
Specific protection of the dovecote.
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Fronts and roofs; the entrance gate (Case AK 1, 3): registration by order of 15 June 1976 - All the elements comprising the manor house, namely the Louis XIII pavilion in total, the fountain and its basin, the pool, the fence walls and the floors of the enclosed garden containing the mail and the remains of the old terraces (Box ZV 3): inscription by order of 27 January 2003 - The dovecoier (ZV 3): registration by order of 29 March 2004
Key figures
Information non disponible - No name cited
Sources do not mention any characters.
Origin and history
The Deil mansion was originally built in the 15th century, as evidenced by two circular towers (one today ruined) located at the north-east and south-east ends of the estate. These medieval remains anchor the site in a period of defensive construction, typical of the Breton manors of the period, while announcing the subsequent transformations.
In the 17th century, the mansion underwent major aesthetic and functional changes. A Louis XIII style pavilion was erected, although it later lost its residential vocation. Add an imposing octagonal dovecote, a fountain with complex geometry (from square to octagon) and a wash, all connected by a landscaped mail between the fountain and the dovecote. These developments reflect a desire to embellish and control the exterior spaces, characteristic of the seigneurial residences of the Old Regime.
The 19th century marked a symmetrical recomposition of the southern part of the mansion. The common buildings are arranged on both sides of a double entrance porch (cochère and pedestrian), creating an architectural balance absent in the previous phases. This period illustrates the adaptation of manor houses to the new social uses and aesthetic cannons of the century, while retaining elements inherited from previous eras.
Deil's mansion enjoys protection as a historical monument in several stages: partial inscription of facades and roofs in 1976, extension to landscape elements (Louis XIII hill, fountain, pool, fence walls) in 2003, and finally classification of the dovecote in 2004. These measures highlight the heritage value of a complex of five centuries of architectural and landscape history.
Located in the town of Allaire (Morbihan), the manor house is situated in a territory marked by a dense concentration of manor houses and castles, reflecting the historical importance of the nobility and of the Earth bourgeoisie in Brittany. Its state of conservation and its successive protections make it a privileged witness to the evolution of large rural residences, from medieval times to modern times.
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