| "An outbreak of criminal folly": 'Donegal Vindicator' and the 1916 Rising | Blair, Raymond A. | Article in Journal | | 2016 |
| A Carlow folly | Feeley, J.M.Moore, E.A. | Article in Journal | | 2016 |
| Dromana Gate, Co. Waterford | Murphy, Damian | Article in Journal | | 2010 |
| Hubert's folly : the abortive castle of the Kerry campaign, 1228 | Spurgeon, C. J. | Article in Book | | 2003 |
| Juvenal, Swift, and the folly of love | Nussbaum, Felicity | Article in Journal | | 1976 |
| Kiltimon Castle - medieval castle or modern folly? | Corlett, Christiaan | Article in Journal | | 2008 |
| Miscellanea. Folly at Palmerstown Demesne | McCabe, Brian | Article in Journal | | 2020 |
| Soldiers of folly : the IRA border campaign, 1956-1962 | Flynn, Barry | Monograph or Collective Volume | Collins Press | 2009 |
| The castles and stronghouses of Ireland | Salter, Mike | Monograph or Collective Volume | Folly | 1993 |
| The castles of Connacht | Salter, Mike | Monograph or Collective Volume | Folly Press | 2004 |
| The castles of Leinster | Salter, Mike | Monograph or Collective Volume | Folly Press | 2004 |
| The castles of North Munster | Salter, Mike | Monograph or Collective Volume | Folly Publications | 2004 |
| The castles of south Munster | Salter, Mike | Monograph or Collective Volume | Folly Press | 2004 |
| The castles of Ulster | Salter, Mike | Monograph or Collective Volume | Folly Press | 2004 |
| The Connolly folly : a case for Richard Castle | Guinness, DesmondKnight of Glin, 1937- | Article in Journal | | 1963 |
| The edifying bishop : 'bishop's folly' | Paterson, T. G. F. | Article in Journal | | 1966 |
| The folly of rationalist politics: Michael Oakeshott and the revival of Irish | Williams, Kevin | Article in Journal | | 2014 |
| The folly that never was | Myers, Kevin | Article in Journal | | 2005 |
| Two bardic themes : The Trinity in the Blessed Virgin's Womb and The rain of folly | Breeze, Andrew | Article in Journal | | 1991 |
| Wentworth's wisdom or Stafford's folly : the early seventeenth-century house at Jigginstown, Naas, Co. Kildare | Quirke, Sinead | Article in Journal | | 2006 |