| 'Crux Hiberniae' : the Cross of Ireland | Fennessy, Ignatius | Article in Journal | | 2007 |
| 'From Seagoe to Jerusalem' once more | Fennessy, Ignatius | Article in Journal | | 2001 |
| A friend of Nano Nagle : Laurence Callanan, O.F.M. (1739-1818) | Fennessy, Ignatius | Article in Journal | | 2000 |
| A memoir of Peter Begley OFM on observance in the Irish province (1928-34) | Fennessy, Ignatius, OFM | Article in Journal | | 2010 |
| A note on a Franciscan Stuart from Armagh | Fennessy, Ignatius | Article in Journal | | 2003 |
| A select prosopography of some Irish Franciscans on the continent | Fennessy, Ignatius | Article in Book | | 2009 |
| A supplement to the report on the state of popery in Ireland in 1731 : an anti-fraternal bias | Fennessy, Ignatius | Article in Journal | | 2000 |
| A tourist's view of Killarney in 1810 | | Article in Journal | | 2000 |
| Alphabetical indexes for Irish Franciscan 'incunabula' in Rome and Dublin | Fennessy, Ignatius | Article in Journal | | 2001 |
| An alphabetical index for some manuscripts in St. Isidore's College, Rome | Fennessy, Ignatius | Article in Journal | | 2001 |
| Assessing Australian Army records | Fennessy, Ignatius | Article in Journal | | 2007 |
| Bishop Robert Walsh, the friars, and Edmund Ignatius Rice, 1817 | Fennessy, Ignatius | Article in Journal | | 1996 |
| Blessed John Duns Scotus in Lisnaskea | Fennessy, Ignatius | Article in Journal | | 2004 |
| Books in the Franciscan Friary, Cork, in the days of the French Revolution and Jansenism | Fennessy, Ignatius | Article in Journal | | 2005 |
| Books listed at Wexford Friary shortly before 1798 | Fennessy, Ignatius | Article in Journal | | 2003 |
| Canon E. Reussen's list of Irish Fransiscan theses in Louvain 1620-1738 | Fennessy, Ignatius | Article in Journal | | 2006 |
| Castledermot and the Franciscans | Fennessy, Ignatius | Article in Journal | | 1998 |
| Father Peter B. Bradley and Irish Franciscan chaplains in World Wars I and II | Fennessy, Ignatius | Article in Journal | | 2003 |
| Franciscan guardians in Co. Kildare 1629-1872 | Fennessy, Ignatius | Article in Journal | | 1994 |
| Friar Fleming and "The Kilruddery Hunt" | Fennessy, Ignatius | Article in Journal | | 2002 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| Friar Thomas Francis Cassidy and his large collection of books | Fennessy, Ignatius, OFM | Article in Journal | | 2009 |
| From Seagoe to Jerusalem with a singular Franciscan | Fennessy, Ignatius | Article in Journal | | 1999 |
| Guardians at Multyfarnham Friary | Fennessy, Ignatius | Article in Journal | | 2013 |
| Guardians of the East Road at the West end of the world | Fennessy, Ignatius | Article in Journal | | 1993 |
| Horse racing at Killarney and Waterville long ago | Fennessy, Ignatius | Article in Journal | | 1999 |
| Hugh Charles Horan of Galway and Mother Mary MacKillop | Fennessy, Ignatius | Article in Journal | | 1999 |
| Letter to the editor | Fennessy, Ignatius | Article in Journal | | 2002 |
| Liber Killiniensis : Irish Franciscan chapter bills 1876-1999 and other lists, including a catalogue of friars on lists already published | Fennessy, Ignatius | Monograph or Collective Volume | Dun Mhuire | 2001 |
| More printed items from the Wadding Papers (FLK MSS D 1-2, and others) | Fennessy, Ignatius | Article in Journal | | 1999 |
| News from Rome, 1691 : books and friars | Fennessy, Ignatius | Article in Journal | | 1999 |
| Patrick Pearse and the four (or five) Masters | Fennessy, Ignatius | Article in Journal | | 2001 |
| Patrick Roche of Kinsale and St. Patrick’s College, Rome | Fennessy, Ignatius | Article in Journal | | 1995 |
| Printed items among the Wadding papers (FLK, Mss D1-10 and others) | Fennessy, Ignatius | Article in Journal | | 1998 |
| Receptions and professions at the Ennis Novitiate of the Friars Minor, 1877-85 (FLK, MS C 622, int.3) | Fennessy, Ignatius | Article in Journal | | 1999 |
| Repercussions of reform, some papers concerning Brother Jarlath Prendergast, OFM, and St. Anthony's Hostel, Cork | Fennessy, Ignatius | Article in Journal | | 2005 |
| Richard Brady OFM, bishop of Kilmore, 1580-1607 | Fennessy, Ignatius | Article in Journal | | 2000 |
| Some Cork subscribers conned in 1795? | Fennessy, Ignatius | Article in Journal | | 2006 |
| Some correspondence of James and Margaret Pearse | Fennessy, Ignatius | Article in Journal | | 2004 |
| Some Franciscan altar plates from Drogheda | Fennessy, Ignatius | Article in Journal | | 2012 |
| Some Irish clerical subscribers 1800-24 | Fennessy, Ignatius | Article in Journal | | 1994 |
| Some post-incunabula in St. Isidore's College, Rome | Fennessy, Ignatius | Article in Journal | | 2003 |
| The B manuscripts in the Franciscan library, Killiney | Fennessy, Ignatius | Article in Book | | 1995 |
| The chapter at Cork 1291 : a gory Franciscan story | Fennessy, Ignatius | Article in Journal | | 2005 |
| The Franciscan College Multyfarnham 1897-1997 : centenary lists | Fennessy, Ignatius | Article in Journal | | 1998 |
| The Franciscan friary at Kildare | Fennessy, Ignatius | Article in Journal | | 1996 |
| The guardians at Bunamargy Friary, Co Antrim | Fennessy, Ignatius | Article in Journal | | 2013 |
| The Meelick Obituary and Chronicle (1623-1873) (with index) | Fennessy, Ignatius | Article in Journal | | 2006 |
| The Prince and the Franciscan | Fennessy, Ignatius | Article in Journal | | 2006 |
| The Retraction of Peter Walsh, OFM, 1688 | Fennessy, Ignatius | Article in Journal | | 1992 |
| The strange case of a subdeacon, Jarlath Prendergast, O.F.M. (1884-1911) | Fennessy, Ignatius | Article in Journal | | 1991 |
| The theft of the relic of Holy Cross Abbey | Fennessy, Ignatius | Article in Journal | | 2000 |
| The Warren letters, 1746-63 | Fennessy, Ignatius | Article in Journal | | 2008 |
| Two letters from Boetius (Augustine) MacEgan, O.F.M., on the death of Archibishop Florence Conry, O.F.M. 1629 | Fennessy, Ignatius | Article in Journal | | 2001 |