Llangelynnin (; Welsh for The church of Celynnin) is a former parish in the Conwy valley, in Conwy county borough, north Wales. Today the name exists only in connection with the church, a school in the nearby village of Henryd, and the nearby mountain ridge, Craig Celynnin. Llangelynnin Church (Welsh: Eglwys Llangelynnin) is possibly one of the remotest churches in Wales (), and is amongst the oldest; that at Llanrhychwyn, further up the valley, is a little older. The church is dedicated to Saint Celynnin, who lived in the 6th century and probably established the first religious settlement here. It lies at a height of about feet, above the village of Henryd in the Conwy valley, in the shelter of Tal y Fan (), the mountain to the south-west. A small and simple building, it probably dates from the 12th century (although some sources cite the 13th century), and was probably pre-dated by an earlier church of timber, or wattle and daub construction. Llangelynnin is also the name of the former parish, the primary school in nearby Henryd (Ysgol Llangelynnin). Celynnin's name is also carried by Craig Celynnin, a mountain ridge adjacent to the church. St. Celynnin Celynnin lived in the 6th century, and according to tradition was one of the sons of Helig ap Glanawg, a prince who lived at Llys Helig (in what is now known to a natural rock formation) before the sea inundated the land off the coast of Penmaenmawr. It is said that Celynnin was related to Rhun, son of Maelgwn Gwynedd, Prince of Gwynedd, who is known to have ruled in the 6th century, and that he was also a brother to Rhychwyn, the saint associated with Llanrhychwyn church. Location Next to the church lie the remains of an Iron Age hut circle, and some stories romantically suggest that this was where St. Celynin himself lived. It is also reputed to have been used as a cockfighting ring. The church is overlooked from the north-east by the adjacent crags of Cerrig-y-ddinas, the site of an Iron Age hillfort. These crags afford wide views down the Conwy valley to the sea, and up the valley as far as Dolgarrog. Pathways Many old paths lie in the area, and these routes would have been established at a time when the hills were considerably more wooded. An old walled bridleway route leads east from the church, down