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Place

Ynysddu

Ynysddu is a small village, community and electoral ward in the Sirhowy valley of south-east Wales. It is part of the district of Caerphilly within the historic boundaries of Monmouthshire. It lies between to Cwmfelinfach and Wyllie, 4.3 mi north of the town of Risca and 4 mi south of the market town of Blackwood.

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In this article

  1. 01History and topography
  2. 02Notes, references and evidence

The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 26 September 2026.

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