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Origin and history

Trévennou Manor House, located in Langoat, Brittany, is a 16th-century building built of granite stone. It features a T-shaped plan with an oriental façade decorated with a Renaissance door in a full arch, accessible by a perron. The basement, both storage space and heated life space, could be a vestige of the primitive seigneurial residence. The manor house, once surrounded by a closed courtyard, lost some of its elements (portal, chapel, dovecote) and was amputated from one floor.

The site, close to the Guindy River, was accessible by a historic road leading to Lanmérin, 1,000 metres away. Originally, it included a watermill, chapel and dovecote, and belonged to noble families such as the Keruzy, Larmor, or Rogon. The seigneury of Trévennou, with rights of medium and low justice, extended over Laangoat, Lanmerin and Trevenou, and was vassal of the abbey of B Regard.

The manor house, registered as a historic monument since 1970, suffered a fire in 1993 before being restored by the Perrot family from 1995. Its toponym, mentioned from the Middle Ages in various forms (Treveznou, Trevechnou), is linked to the Life of Saint Maudez, with a nearby fountain bearing his name. The coat of arms of the mansion, mutilated during the Revolution, recalls its seigneurial past.

Architecturally, the mansion preserves two Renaissance chimneys: one carved with a cornice with denticles, the other classic with pilasters and triglyphs. A cariatide adorns the interior carpentry with a high opening. The site, 4 km west of the village of Lagoat, illustrates the evolution of a noble Breton place between aristocratic residence and farming.

The archives mention successive owners such as Olivier de Larmor (1541), Nicol (1735) and Rogon (1768). In 1683, Trevennou was a friary (parochial subdivision) with its chapel, typical of the medieval Breton social organization. The minihy of Tréguier, monastic territory, exercised spiritual and seigneurial influence.

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