Conor O’Brien of Lemenagh Castle was killed in battle by the Cromwellian army. His widow Maire Rua or Red Mary O’Brien agreed with General Ireton as a mark of good faith to marry an officer in the Cromwellian army in order to save the family estate. She married Cornet John Cooper thus preserving the Estates for her eldest son Sir Donough O’Brien.
1940-1962
