Rhos Fynach
In 1186 Llywelyn the Great permitted the establishment of the Cistercian Aberconwy Abbey, and the monks built a fishing weir on the sea shore below Bryn Euryn. The place became known as Rhos Fynach, heath of the monks. In a charter of 1230, Llywelyn sanctioned the purchase by Ednyfed Fychan of land at Rhos Fynach and in 1289, the abbey moved to Maenan (becoming Maenan Abbey), and the weir was ceded to Ednyfed's estate. Eventually Rhos Fynach and the weir came into the hands of Robert Dudley, Earl of Leicester, who in 1575 granted it to a Captain Morgan ap John ap David, a privateer, for services rendered against the enemies of Queen Elizabeth I at sea. (This is not the famous pirate of the Caribbean Captain Henry Morgan who lived in the century following).
The weir continued to provide a prosperous livelihood through to the early 20th century: during a single night in 1850, 35,000 herring were caught, and 10 tons of mackerel were removed in one tide as late as 1907. Because such weirs decimated inshore fish stocks, Parliament banned them in 1861 unless it could be shown they pre-dated the Magna Carta, which the then owners, the Parry Evans family, were able to prove. Their estate included Rhos Fynach house, also known as Rhos Farm, on the Promenade near St Trillo's Chapel. The house is now a pub and restaurant. Its date of construction is not known for sure, but it is considered to have been started by the Cistercians before the Dissolution of the Monasteries.
The fishing weir fell into disuse during World War I and most traces have disappeared. Trial excavation of the site in 1993 recorded constructions carbon 14-dated between 1500 and 1660.
Read more about this topic: Rhos-on-Sea