Llanon’s name stems from its association with Saint Non, the mother of St David, the patron saint of Wales and who was born about 500 AD and was brought up here. The village dates back to a charter of about 1215 showing that the Lord Rhys ap Grufudd gave the land to the Bishop of St David's Chapel.
The land subsequently passed to the Cistercian monks of Strata Florida and the shoreline, like nearby Aberarth, still features their mediaeval fish traps near Plas Morfa in Llanon.
Meanwhile Llansantffraed Church and land north of the River Peris was granted even earlier to the Knights Hospitallers of St John of Jerusalem. Unusually this church is dedicated to another female saint namely St Bridget of Ireland reflecting the links and importance of trade across the Irish Sea.
The long stretch of level fertile land from Llanon to Llanrhystud was regularly used for growing barley – leading to plenty of illicit brewing in the early 1800s – perhaps a good reason why many a ship’s captain retired to build substantial houses in Llanon.