What is recorded here

Simonstown Castle stood as a tower house above a winding river in County Westmeath, commanding the undulating pasture until political upheaval and changing ownership stripped it of purpose. John Fitzgerald held the lands when surveyors mapped the region in the mid-seventeenth century, but the structure soon lost its identity and became merely an old castle on later estate drawings. Most of its rough limestone was likely recycled to build Simonstown House nearby, leaving behind only a short wall fragment and a quiet quarry depression where the greater residence once rose.

Simonstown Castle is recorded as a castle in County Westmeath. Its open map record supplies this location and any linked names or public references.

Simonstown Castle was built in the 17th century by the MacDermott family, a prominent Gaelic Irish clan in the region. It is remembered as a symbol of local Gaelic resistance and adaptation during the period of English colonial expansion in Ireland.