Why this matters
Geashill Castle was built in the 15th century by the Mac Giolla Phádraig (O'Hehir) family, a prominent Gaelic Irish clan in the area. The castle is remembered as a significant medieval stronghold in County Offaly and reflects the region's Gaelic heritage before English expansion in the 16th century.
What is recorded here
Geashill Castle (ruins) is recorded as a castle in County Offaly. Its open map record supplies this location and any linked names or public references.