Lanmérin is a small commune in the Trégor, in Côtes-d’Armor, where a compact parish centre sits among farms and scattered hamlets. The Guindy valley gives the landscape a clear thread: stone crossings, mill remains and footpaths make the river part of the local story. INSEE’s 2023 census records 575 municipal residents across the whole commune, at 138.6 people per square kilometre. That is a commune-wide figure, not a count for the church village alone.
A parish landscape beyond the village centre
The 2017 architectural inventory describes old Lanmérin as a mixture of the central village, isolated farms and small clusters of two or three households. Its lanes therefore reward slow travel: the parish church and former rectory anchor the centre, while chapels, crosses, fountains and farmsteads sit in the wider countryside. The regional inventory’s reading of the 1834 cadastral map finds about fifteen houses in the village, clustered around the church and rectory. It also records that the chapel of La Salle stands apart from a hamlet, along the road between Rospez and the village.
What the records establish
Medieval and early-modern records give the estate of La Salle an unusually visible place in Lanmérin’s history. The inventory reports Huon de La Salle as the only noble identified in the parish in the 1437 tax reform, and says that he probably built the manor and noble farm of Kertanguy in the first quarter of the fifteenth century. The estate passed to Robert Le Lagadec in 1535; the inventory considers him the probable patron of the chapel completed the following year. The date 1536 is carved on the building. Its small granite-and-schist body, pointed door surrounds, carved roof beams and sculpted wall plates bring flamboyant Gothic forms together with Renaissance details. The state heritage register records its classification as a historic monument on 24 November 1930.
Saint-Mérin church tells a separate, well-documented sequence. Its main construction belongs to the seventeenth century; it was repaired in 1743 and extensively rebuilt in 1914–21. The church is also dedicated to Saint Brigid. An old yew in the enclosure commemorates the election of Lanmérin’s first municipal council on 28 February 1790. By contrast, the municipal website calls the two large stones across the Guindy at Mouden a Gallo-Roman bridge, dating them to the first or second century. That is a local heritage attribution; the consulted architectural inventory does not independently establish the date, so it is best treated as a claim to investigate rather than a proven excavation result.
Farms, water and work
Agriculture still gives the commune much of its physical character. The municipal directory lists dairy and beef cattle, poultry, pigs, cereals, watercress and vegetables among farms in the area. INSEE counted eleven employer establishments at the end of 2024: commerce, transport and varied services made up 45.5 percent, construction 27.3 percent, public services 18.2 percent and agriculture 9.1 percent. Because the table covers employer establishments only, these shares are a small statistical snapshot, not a complete account of local livelihoods. The municipality also lists a grocery-bar and independent tradespeople; confirm current opening times and services before relying on them.
At Rumolin, two millstones, part of the miller’s house and the old water channel remain as traces of milling beside the Guindy. The parish centre adds Saint-Jean and Kerfant fountains with their washhouses, several wayside crosses and the municipal mural made by Julio Carrasco Breton with Christiane Ramonbordes in 2014. These modest places make a useful itinerary: they connect ordinary water, farm and parish life rather than presenting the commune as a single monument.
Walking and practical planning
The mairie provides a discovery circuit and downloadable walking guide linking the chapel, church, bridge, Rumolin mill, fountains and local paths. A longer official tourism route, the Chemin des Lavandières, starts in neighbouring Quemperven: its listed loop is 17.6 kilometres, takes about five hours and is rated difficult. It follows the Jaudy–Guindy valleys and crosses the Guindy on the stone bridge to Lanmérin. The route is not a short village stroll; check the latest map, markings, weather and river conditions before setting out. The tourism office currently lists chapel visits by request through the mairie and Saint-Mérin church as closed. Opening information, public transport and the grocery-bar’s hours can change, so confirm each directly before travel.
