Origin of the seigneury début XVe siècle (≈ 1504)
First family mention of Breil
vers 1600
Union of Families
Union of Families vers 1600 (≈ 1600)
Fusion of Breil and Brunet
XVIIe siècle
Construction housework
Construction housework XVIIe siècle (≈ 1750)
Main building
début XVIIIe siècle
Added flag
Added flag début XVIIIe siècle (≈ 1804)
Architectural extension
8 mars 1990
Partial MH registration
Partial MH registration 8 mars 1990 (≈ 1990)
Front and garden protection
Aujourd'hui
Aujourd'hui
Aujourd'hui Aujourd'hui (≈ 2025)
Position de référence.
Heritage classified
Façades and roofs of the house (parts 17th and 18th century) , chapel and outbuildings (XVIII century); court; French garden; great driveway of the park (cad. C 1106, 1109, 1115, 1117; ZY 63i, j, k): entry by order of 8 March 1990
Key figures
Famille du Breil - First lords
Owners since 15th century
Famille Brunet - Current owners
Owned the castle since 1600
Origin and history
The Château du Guillier is an emblematic monument located in the commune of Plédéliac, in the department of Côtes-d-Armor in Brittany. Built mainly in the 17th and 18th centuries, it consists of a house body dating back to the 17th century and a lightly projected pavilion added at the beginning of the 18th century. The property is organized around a court of honor closed by outbuildings and two pavilions, while its back façade opens onto a French garden, typical of landscaped art of the time.
The seigneury of the Guillier dates back at least to the beginning of the 15th century, when it belonged to the Breil family. Around 1600, this line unites with the Brunet family, which still retains the property of the castle today. This place, marked by rare family continuity, bears witness to the local aristocratic anchoring over centuries. The castle was partially listed as historic monuments on 8 March 1990, protecting its facades, roofs, chapel, outbuildings, as well as its garden and large driveway.
The protected elements reflect the architectural evolution of the site, combining 17th and 18th century styles. The chapel and outbuildings, dated from the 18th century, complete a coherent set of mixed residential and prestige functions. The park's wide driveway, characteristic of seigneurial estates, highlights the landscape importance of the site. These protections illustrate the heritage value of the Guillier, both for its family history and its architecture representative of the Ancien Régime Brittany.
