Fethard Castle stands as a striking medieval ruin in Fethard-on-Sea, County Wexford, tracing its origins to Norman settlement patterns of early 13th-century Ireland. Originally founded around 1200 by Richard de Londres as a wooden motte with bailey and ditch, the site was later transformed into a substantial stone fortress from the 14th century onwards, likely built or sponsored by the Bishop of Ferns seeking a secure stronghold. The castle's distinctive L-shaped fortified manor features a tall round crenellated tower at its southeastern corner, with ground-level chambers that probably served defensive and administrative functions during the medieval period. The name derives from Irish 'Fiodh Ard' meaning 'high wood', reflecting the landscape's natural character, while the castle's history as a episcopal refuge and later private residence of the Loftus family demonstrates its significance through Ireland's turbulent centuries until gradual abandonment by the Irish Civil War era.