Why this matters
Built by King John of England in the early 13th century, around 1209–1210, during his campaign to reassert control over Ireland. The castle is important as a symbol of medieval English authority in Ireland and as a key historical site reflecting the political and military strategies of the Plantagenet kings.
What is recorded here
King John's Castle is recorded as a castle in County Limerick. Its open map record supplies this location and any linked names or public references.