| Commercial relations between Aquitaine and Ireland c.1000 to c.1550 | O'Brien, A. F. | Article in Book | | 1995 |
| Economy, growth and settlement in medieval Ireland | O'Brien, A. F. | Article in Journal | | 1994 |
| Episcopal elections in Ireland, c.1254-72 | O'Brien, A. F. | Article in Journal | | 1973 |
| Ireland : conquest, settlement and colonisation | O'Brien, A. F. | Article in Book | | 1998 |
| Irish Exchequer records of payments of the fee farm of the city of Cork in the later middle ages | O'Brien, A. F. | Article in Journal | | 1998 |
| Medieval Youghal : the development of an Irish seaport trading town, c.1200-c.1500 | O'Brien, A. F. | Article in Journal | | 1989 |
| Politics, economy and society : the development of Cork and the Irish south-coast region, c.1170-c.1583 | O'Brien, A. F. | Article in Book | | 1993 |
| The development and evolution of the medieval borough and port of Dungarvan, County Waterford, c. 1200 to c. 1530 | O'Brien, A. F. | Article in Journal | | 1987 |
| The development of the privileges, liberties and immunities of medieval Cork and the growth of an urban autonomy c. 1189 to 1500 | O'Brien, A. F. | Article in Journal | | 1985 |
| The Dublin Parliament of 1297 | O'Brien, A. F. | Article in Journal | | 2000 |
| The impact of the Anglo-Normans on Munster | O'Brien, A. F. | Monograph or Collective Volume | Barryscourt Trust | 1997 |
| The impact of the Anglo-Normans on Munster | O'Brien, A. F. | Article in Book | | 2004 |
| The royal boroughs, the seaport towns and royal revenue in medieval Ireland | O'Brien, A. F. | Article in Journal | | 1989 |
| The settlement of Imokilly and the formation and descent of the manor of Inchiquin, Co. Cork | O'Brien, A. F. | Article in Journal | | 1982 |
| The territorial ambitions of Maurice FitzThomas, first earl of Desmond, with particular reference to the barony and manor of Inchiquin, co. Cork | O'Brien, A. F. | Article in Journal | | 1982 |
| Youghal | O'Brien, A. F. | Article in Book | | 1995 |