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Village Pond, Fonmon, Vale of Glamorgan. - - 374957.jpg
Village pond, Fonmon
Fonmon is located in Vale of Glamorgan
Fonmon shown within the Vale of Glamorgan
Principal area
Ceremonial county
Country Wales
Sovereign state United Kingdom
Postcode district CF
Police South Wales
Fire South Wales
Ambulance Welsh
EU Parliament Wales
UK Parliament
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List of places
Vale of Glamorgan
51°23′59″N 3°22′11″W / 51.399779°N 3.369596°W / 51.399779; -3.369596Coordinates: 51°23′59″N 3°22′11″W / 51.399779°N 3.369596°W / 51.399779; -3.369596

Fonmon (Welsh: Ffwl-y-mwn) is a hamlet in the Vale of Glamorgan in south Wales. It lies just off the B4265 road to the northwest of Font-y-Gary and Rhoose on the western side of Cardiff Airport. The hamlet is best known for its central duck pond and Fonmon Castle, a historical house located on the otherside of the B4265 road to the north. The largest house in the hamlet is called The Gables, accessed off a drive on the left approaching Fonmon from the north. A number of the houses in the area are thatched roofed.


Fonmon Castle is one of the few medieval castles which are still lived in as a home. Since it was built by the St. John family c.1200, it has only changed hands once.[1] Oliver St John of Fonmon was one of the legendary Twelve Knights of Glamorgan who effected the Norman conquest of Glamorgan. The St John family is today represented by the Viscounts Bolingbroke. The castle is still in use as a private residence. The present owners, the Boothby baronets, are descendants of Colonel Philip Jones, who bought the house in 1654.[2] In 1762 the castle was renovated by Thomas Paty of Bristol for its owner at the time, Robert Jones.[3] The ceilings and library were designed by Thomas Stocking in the Rococo style and extensive gardens were added.[3]



  1. ^ Spurgeon, Clifford (April 2000). An inventory of the ancient monuments in Glamorgan. Royal Commission on Ancient and Historical Monuments in Wales, H.M.S.O. pp. 147–50. ISBN 978-1-871184-22-8. Retrieved 19 April 2012. 
  2. ^ Williams, William Retlaw (1895). The parliamentary history of the principality of Wales, from the earliesr times to the present day, 1541-1895: comprising lists of the representatives, chronologically arranged under counties, with biographical and genealogical notices of the members, together with particulars of the various contested elections, double returns and petitions. Priv. print. for the author by E. Davis and Bell. p. 97. Retrieved 19 April 2012. 
  3. ^ a b Newman, John (1995). Glamorgan: (Mid Glamorgan, South Glamorgan and West Glamorgan). Yale University Press. p. 350. ISBN 978-0-14-071056-4. Retrieved 19 April 2012.