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Rhydymwyn
Rhydymwyn
	Post office at Rhydymwyn
	Rhydymwyn Location within Flintshire
Population	522 (2021)
OS grid reference	SJ205665
Community	Cilcain;
Principal area	Flintshire;
Preserved county	Clwyd;
Country	Wales
Sovereign state	United Kingdom
Post town	Mold
Postcode district	CH7
Dialling code	01352
Police	North Wales
Fire	North Wales
Ambulance	Welsh
UK Parliament	Delyn;
Senedd Cymru – Welsh Parliament	Delyn;
	List of places UK Wales Flintshire 53°10′48″N 3°11′24″W / 53.18000°N 3.19000°W

Rhydymwyn (Welsh for 'Ford of the Ore'^[a]) is a village in Flintshire, Wales, located in the upper Alyn valley. Once a district of Mold, it was recognised as a separate parish from 1865. It is now part of the community of Cilcain.

Geography

The geology of the area consists of a layer of extremely pure, and hence structurally sound, 200 feet (61 m) thick layer of limestone at depths ranging from surface to 900 feet (270 m).^[3] The limestone holds other minerals, including nickel and copper deposits, making it an ideal site for mining.

History

Due to the industrialisation of nearby Northwest England, and its needs for mineral supplies, the mineral deposits in the Alyn valley created a population explosion in various villages, including Rhydymwyn. From the mid-18th century, Rhydymwyn was the site for a range of industries, which included foundries, waterwheels as well as mine workings.^[4]

The new parish of Rhydymwyn was created on 31 March 1865, comprising: parts of the townships of Gwysaney and Gwernaffield, formerly in the parish of Mold; parts of the townships of Cefn and Glust (or Llysdianhunedd), and the whole of the township of Mechlas, formerly in the parish of Cilcain; and part of the township of Caerfallwch, formerly in the parish of Northop. The foundation stone of the new parish church, dedicated to St. John the Evangelist, was laid on 1 August 1861, and the church was consecrated on 17 September 1864.^[5] It has been designated a grade II* listed building.^[6]

The Ministry of Supply (M.S.) Valley Factory, constructed from 1939, was the principal UK location for the production of mustard gas during the Second World War, and was used for storage of the gas until stocks were destroyed in 1958. Building P6 on the site was used for the experimental production of Uranium-235 by the gaseous diffusion method as part of the Tube Alloys project, until work on the development of the atomic bomb was transferred to North America following the Quebec Agreement of 1943.

The Denbigh and Mold Junction Railway had a Rhydymwyn station on the south side of A541, which opened on 6 September 1869.^[7] The station closed to passengers on 30 April 1962 and completely from 4 May 1964. The former station building is now a private house.^[8]

Ffynnon leinw

Approximately 1 mile (1.6 km) from Rhydymwyn is the small hamlet of Hendre. Along the main road from the old Sardis Chapel, and only a few feet from the edge of the A541 there is an ancient well - Ffynnon leinw - (leinw comes from the Welsh word "llanw" meaning tide as it is reported that the water in the well rose and ebbed with the tides of the Dee Estuary). The well has been listed as one of the holy wells of Wales on a par with the more famous St Winefride's Well in Holywell. The well in Hendre is mentioned by Thomas Pennant in his 'A Tour in Wales' - written between 1778–1783 and also by Giraldus Cambrensis or Gerald of Wales in his 'Journey through Wales' written in 1188 - an itinerary of his journeys as he accompanied Archbishop Baldwin of Exeter to enlist support for the Third Crusade.

Mendelssohn and Charles Kingsley

The famous German composer Felix Mendelssohn Bartholdy composed The Rivulet in 1829 while visiting his father's friend John Taylor (himself a famous mining engineer and entrepreneur) and his family in 1829 who rented Coed Du. This work was inspired by the beauty of the countryside. During the same visit, Mendelssohn composed his operetta Son and Stranger.^[9]

Charles Kingsley, author of The Water-Babies, A Fairy Tale for a Land Baby, also came and walked the Leete; both his and Mendelssohn's visits are commemorated by a plaque in Nant Alyn Road, Rhydymwyn.

Recent times

In the autumn of 2000, local rainfall was exceptional in terms of intensity and duration. Between 28 October and 6 November, 68 homes and 8 businesses flooded in Rhydymwyn because of overflow from the River Alyn. In 2002 and 2003, DEFRA's internal team in two phases created a flood alarm and protection scheme to protect the whole village and Valley Works, with a level of protection in excess of a flood with a 1% chance of occurring in any one year. The total cost for the scheme was £88,000.^[10]

Notes

^ referring to a ford across the River Alyn now replaced by a small iron bridge

References

^ in the Rhydymwyn built up area
^ "Rhydymwyn". UK Census Data 2021. Retrieved 9 May 2023.
^ Davies, Ian (1997). "Rhydymwyn: History". Subterranea Britannica. Retrieved 18 September 2008.
^ "WWII secret weapons site". BBC Wales. Retrieved 18 September 2008.
^ "Rhydymwyn, Flintshire". GenUKI. Retrieved 18 September 2008.
^ "Church of St John, Church Lane, Rhydwymyn, Cilcain". British Listed Buildings. Retrieved 9 January 2014.
^ "Mold and Denbigh Junction Railway". RailScot. Retrieved 18 September 2008.
^ "Disused stations - Rhydymwyn". Subterranea Britannica. Retrieved 18 September 2008.
^ Davies, Rhian (19 June 2009). "Mendelssohn in Mold". BBC Northeast Wales. Retrieved 20 September 2020.
^ "Rhydymwyn Flood Alleviation Scheme". Environment Agency. Retrieved 29 July 2012.