| 'In a landlord's garden' | Mathews, P. J. | Article in Book | | 2011 |
| 1696-1996 : St. Paul's Church, Portarlington, 'the French church' : an illustrated history | Powell, J. S. (John Stocks) | Monograph or Collective Volume | Portarlington and Monasterevan Parish of the Church of Ireland | 1996 |
| 1913 telephone numbers | Mathews, Ronnie | Article in Journal | | 2012 |
| A battle of two civilizations? : D. P. Moran and William Rooney | Mathews, P. J. | Article in Journal | | 2002 |
| Aghowle : where the divil ate the tinker : the history of a Wicklow townland and its farming | Connolly, Margaret | Monograph or Collective Volume | Applefield Publishing | 2017 |
| Aidan Carr Mathews (b.1956) | White, Harry | Article in Book | | 2005 |
| Belgian refugees in Portarlington 1914 | Mathews, Ronnie | Article in Journal | | 2005 |
| Belgian refugees in Portarlington, 1914 | Mathews, Ronnie | Article in Journal | | 2004 |
| Brevis synopsis provinciae Hiberniae fratrum minorum | Jennings, BrendanMathews, F. | Article in Journal | | 1934 |
| C. F. Wynne, photographer | Mathews, Ronnie | Article in Journal | | 2008 |
| Donegal Bibliography 2023-24 | Mathewson, Una (compiler) | Article in Journal | | 2024 |
| Eighteenth century Dissenters or Unitarian at Ballybrittas | Mathews, Ronnie | Article in Journal | | 2005 |
| Emo hunt races, 1848-1850 | Mathews, Ronnie | Article in Journal | | 2004 |
| Father Mathew's family : the Mathews in Tipperary | Mathew, David | Article in Journal | | 1957 |
| From Castlebellingham to the Bay of Islands : Lully Mathews, New Zealand's first brick maker | Carr, Tony | Article in Journal | | 2004 |
| Gold hoard found near Portarlington | Mathews, Ronnie
| Article in Journal | | 2014 |
| Handbook of the Irish revival : an anthology of Irish cultural and political writings 1891-1922 | | Monograph or Collective Volume | Abbey Theatre Press | 2015 |
| History of the catholic archbishops of Dublin since the reformation. Vol. 1 | Moran, Patrick Francis, cardinal, 1830-1911 | Monograph or Collective Volume | | 1864 |
| Immediate man : cuimhni ar Chearbhall Ó Dalaigh | | Monograph or Collective Volume | Dolmen Press | 1983 |
| John Mathews: A specimen of Georgian ignorance? | Houston, Kerry | Article in Book | | 2018 |
| Joseph O'Connor (b.1963) | Mathews, P. J. | Article in Book | | 2005 |
| Lord Carlow's Emo Park and Dr Thomas Rice | Mathews, Ronnie | Article in Journal | | 2004 |
| Marking the introduction to the British parliament of the third Home Rull Bill, April 1912 | Mathews, P.J. | Article in Book | | 2012 |
| Miracle rescue of Portlaoise couple from Lusitania sinking in 1915 | Fennelly, Teddy
| Article in Journal | | 2014 |
| Origin and history of the O'Dohertys | Mathews, Anthony | Monograph or Collective Volume | The author | 1973 |
| Origin and history of the O'Donoghues | Mathews, Anthony | Monograph or Collective Volume | | 1973 |
| Origin of the McCanns with a history of the sept | Mathews, Anthony | Monograph or Collective Volume | | 1973 |
| Origin of the McKennas with a history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1972 |
| Origin of the O'Reillys and a history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1970 |
| Origin of the O'Rourkes, with a history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1970 |
| Origin of the surname McGuinness, with a short history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1968 |
| Origin of the surname O'Flaherty, with a short history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1968 |
| Origin of the surname O'Kelly, with a short history of the sept | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1968 |
| Origins of the O'Donoghues | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1973 |
| Origins of the O'Rourkes, with a history of the sept | Mathews, Anthony | Monograph or Collective Volume | | 1970 |
| Portarlington's Grand Smoking Concert. From the files of the 'Leinster Express' (1894) | Mathews, Ronnie | Article in Journal | | 2016 |
| Portarlington, the inside story : a look at life in the town from the days of the O'Dempseys up until modern times | Mathews, Ronnie | Monograph or Collective Volume | The author | 1999 |
| Public lighting - the Dawson Chambers system | Mathews, Ronnie | Article in Journal | | 2004 |
| Revival : the Abbey Theatre, Sinn Féin, the Gaelic League and the Co-operative movement | Mathews, P. J. | Monograph or Collective Volume | Cork University Press in association with Field Day | 2003 |
| Richard O'Sullivan : courageous Irish lawyer of our century | Mathews, Mary | Article in Journal | | 1974 |
| Robert Hood | Burant, Jim | Article in Journal | | 2016 |
| Some early car registration numbers | Mathews, Ronnie | Article in Journal | | 2006 |
| Squire John Weaver | Mathews, Ronnie | Article in Journal | | 2012 |
| St Brendan's mythical isle and toponymic drift : from Iceland to Ecuador | Mathewson, Kent | Article in Book | | 1989 |
| St Germain's School, Portarlington | Mathews, R.G. | Article in Journal | | 2010 |
| Stirring up disloyalty: the Boer War, the Irish Literary Theatre and the emergence of a new separatism | Mathews, P.J. | Article in Journal | | 2003 |
| The canal 'drawbridge' at Portarlington | Mathews, Ronnie | Article in Journal | | 2006 |
| The Knights of the Plough | Mathews, Ronnie
| Article in Journal | | 2014 |
| The Mathews of Bonnetstown, county Kilkenny | Hobson, Roy | Article in Journal | | 1990 |
| The Mountmellick windmill | Mathews, Ronnie | Article in Journal | | 2006 |
| The North Infirmary Hospital, Cork : from charitable infirmary to teaching hospital | Mathews, SheilaRyan, Carmel | Article in Book | | 2014 |
| The O'Neills of Ulster : their history and genealogy. 3 vols. | Mathews, Thomas | Monograph or Collective Volume | | 1907 |
| The Portarlington connection with the Peninsular War, the Battle of Waterloo and the defeat of Napoleon | Mathews, R.G. | Article in Journal | | 2010 |
| The Portarlington Tennis Clubs | Mathews, Ronnie | Article in Journal | | 2006 |
| The Rev. Dudley Fletcher's "spot of bother" | Mathews, Ronnie | Article in Journal | | 2005 |
| Women who scandalised Ireland | Mathews, Anthony | Monograph or Collective Volume | Mathews | 1970 |
| ‘Immortality in the timeless now’ : Patrick Kavanagh and The Bell | Mathews, Kelly | Article in Book | | 2017 |