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Cwm-iou / Cwmyoy

"CWMYOY, a parish partly in the lower division of the hundred of Abergavenny, in the county of Monmouth, and partly in the hundred of Ewyaslacy, in the county of Hereford, 5½ miles N. of Abergavenny, and 3 from the nearest station of the West Midland railway. It is situated on the river Honthy, near a branch of the river Monnow, and contains Fwthog and Bwlch-Trewyn. The country is hilly and picturesque. The parish is separated into upper and lower divisions, and extends along the borders of Herefordshire."

[Description(s) from The National Gazetteer of Great Britain and Ireland (1868)


  • Gant, Robert           Land Ownership and Farm Management in Upper Cwmyoy c1850            Gwent Local History vol 47 1979      Welsh Journals Online
  • Gant, Robert          Depopulation and Deserted Houses in Upper Cwmyoy, 1850-1978        Gwent Local History vol 49 1980    Welsh Journals Online
  • Granville, Cecil.              The tragedy of the Cwmyoy prisoner.              Gwent Local History 75 1993      Welsh Journals Online
  • Graham, James D P       Flax retting on the Brecknock-Monmouth border           Gwent Local History vol 63 1987     Welsh Journals Online
  • Graham, James D P            Schooling in Ewyas            Gwent Local History 65   1988    Welsh Journals Online
  • Lewis, J M.        The Cwmyoy crucifix. Monmouthshire Antiquary 16 (2000), p. 47-50.
  • McGraghan, Isabel             Ancient ruined houses in the Ffwddog         Gwent Local History vol 53 1982    Welsh Journals Online

Church History

See John Ball's site Welsh Churches and Chapels Collection for a photograph/data re Llanthony Priory and also St David's Church

Church and chapel data from The Religious census of 1851 : A Calendar of the returns relating to Wales, Vol 1, South Wales. Ed. by   I.G   Jones, & D. Williams. UWP,  Cardiff, 1976. The names given towards the end of each entry are those of the informants.  Check with  Gwent RO to see what extant records are held, and possible names of chapels/churches established after 1851.

Cwmyoy Parish consisting of Cwmyoy Upper Division, Fwthog hamlet (co Hereford), Cwmyoy Lower Division and Bwlch Trewyn ;
Statistics; Area 10, 366 acres; Population 398 males, 361 females, total 759

  • Upper Division
  • Llanthony Chapel    Ancient chapelry    Attendance - morning 40  (alternately evening)       George Griffith, Officiating Minister, Abergavenny
  • Fwthog hamlet (co Hereford)
  • Tabernacle Chapel, Baptist - Erected 1838    Attendance - 55 + 40 scholars   Morgan Lewis, Minister
  • Lower Division
  • Bethlehem Chapel, Cal.Meth.         Erected 1839    Attendance - morning 40, afternoon 30 scholars, evening 60      John Jones, Minister
  • St Martin's Parish Church    Attendance - morning 40 (alternately afternoons)  1 service in English       Peter Jones Lewis, Incumbent
  • Henllan Chapel, Baptist - Erected 1840     Attendance - evening 97  (afternoons 3 times a month)     Morgan Lewis, Minister

Church Records

See the Monmouthshire county page for links to online records

  • This list of parish records is intended as a rough guide to coverage only. Their location as stated should be confirmed with the appropriate Record Office prior to any visit.
    Cwm-iou / Cwmyoy, St Michael's Church - records with the Gwent RO
    Baptisms Marriages Banns Burials
    1708-92, 1798-1801, 1805-1950 1708-1971 1809-12, 1823-1958 1708-91, 1805-1976
    Bishops Transcripts 1843-67, 1873, 1875-6 - records with the NLW
    Llanddewi Nant Hodni / Llanthony, SS Mary, John the Baptist & Florence's Church (formed from Cwm-iou/Cwmyoy) - records with the Gwent RO
    Baptisms Marriages Burials
    1769-98, 1813-1976 1832-7, 1866-1969 1769-94, 1813-1973
    Bishops Transcripts 1835, 1843, 1845-53, 1855-66, 1873, 1875-6 - records with the NLW
    [Details as published in The Parish Registers of Wales, NLW 1986 - present location/availability may vary]

Description and Travel

You can see pictures of Cwm-iou / Cwmyoy which are provided by:


Historical Geography

You can see the administrative areas in which Cwm-iou / Cwmyoy has been placed at times in the past. Select one to see a link to a map of that particular area.


  • Kain, R.J.P., Oliver, R.R., Historic Parishes of England and Wales: an Electronic Map of Boundaries before 1850 with a Gazetteer and Metadata [computer file]. Colchester, Essex: History Data Service, UK Data Archive [distributor], 17 May 2001. SN: 4348.  Here is a gazetteer/finding aid plus a set of overview maps to accurately identify the position of parishes within the county.
You can see maps centred on OS grid reference SO298232 (Lat/Lon: 51.902860, -3.021789), Cwm-iou / Cwmyoy which are provided by: