John Johnston

1802 – Castlecomer House, Co. Kilkenny

Architect: John Johnston

The original Castlecomer House,

1803 – Birr Castle, Co. Offaly

Architect: Sir Laurence Parsons / John Johnston

There has been a castle on the site since 1170,

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John Johnston

1802 – Castlecomer House, Co. Kilkenny

1803 – Birr Castle, Co. Offaly

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