
The chapel was rebuilt in 1746 as the structure we see today, but using stone from an earlier building. Tréboul became a parish in its own right in 1840 so the chapel was extended in 1847 and 1848 to include two additional aisles, but these were demolished in the late 1800s: the foundations can still be seen from the outside. The spire dating from 1642 and the stone cross are classed as Historic Monuments.