| A lament for Art Óg, Pádraig and Brian Mhag Mathghamhna | | Article in Journal | | 1941 |
| A short history of the Miniter and MacMahon family of Feakle and Whitegate | Larkin, Susan Cavanagh | Article in Journal | | 2002 |
| Bardic poetry and the MacMahons of Oirghialla | Mac Cathmhaoil, Nioclás | Article in Book | | 2017 |
| Colla Dubh Mac Mahon, his ancestors and descendants | Ó Mórdha, P. | Article in Journal | | 1974 |
| Social and spatial order in the MacMahon lordship of Airghialla in the late sixteenth century | Duffy, Patrick J. | Article in Book | | 2001 |
| Some MacMahon wills from Clogher diocese | Ó Mórdha, P. | Article in Journal | | 1991 |
| The French MacMahons | McMahon, Denis | Article in Journal | | 1989 |
| The MacMahon pedigree : a medieval forgery | Simms, Katharine | Article in Book | | 2004 |
| The MacMahons of Monaghan (1500-1593) | Moore, Philip | Article in Journal | | 1955 |
| The MacMahons of Monaghan, (1593-1603) | Moore, Philip | Article in Journal | | 1956 |
| The O'Briens and MacMahons of Thomond, their patronage of the Franciscan Order, and their burial monuments | Ó Dálaigh, Brian | Article in Journal | | 2017 |