Castell Odo

Aberdaron is a community, electoral ward and former fishing village at the western tip of the Llŷn Peninsula in the Welsh county of Gwynedd. It lies 14+3⁄4 miles west of Pwllheli and 33+1⁄2 miles south west of Caernarfon, and has a population of 965. The community includes Bardsey Island, the coastal area around Porthor, and the villages of Anelog, Llanfaelrhys, Penycaerau, Rhoshirwaun, Rhydlios, Uwchmynydd and Y Rhiw. It covers an area of just under 50 square kilometres.

Y Rhiw and Llanfaelrhys have long been linked by sharing rectors and by their close proximity, but were originally ecclesiastical parishes in themselves. The parish of Bodferin/Bodverin was assimilated in the 19th century. The village was the last rest stop for pilgrims heading to Bardsey Island, the legendary "island of 20,000 saints".