Église paroissiale de Sainte-Pompée

Langoat's parish church is dedicated to Saint Pompey. It was probably built on the site of her burial in the 6th century. A fountain of the same name is located on an embankment around a hundred metres north of the parish church.
Saint Pompey (or rather Saint Aspasia, daughter of King Eusebius of Armorica) was originally from Great Britain and immigrated to Armorica in the 6th century. She was the wife of King Hoël I, nicknamed ‘the Great’, who ruled Armorican Brittany, and the mother of seven children, including Tugdual, known as the first bishop of Tréguier, and Léonor.
Tugdual would later become Saint Tugdual, one of the seven founding saints of Brittany. On the death of her husband in 545, Pompey became a nun and retired to the monastery of Langoat. In Brittany, she is also known as ‘Koupaïa’ or ‘Coupaia’.

The mortal remains of Saint Pompey were moved in 1370 to a mausoleum tomb, which was opened in 1768 at the request of the Bishop of Tréguier in order to authenticate the saint's bones and remove relics. The parish church was rebuilt in 1771. The tomb of Saint Pompey was listed as an object in 1911.