| Duffy, P. J. see Duffy, Patrick J. | Cross-reference | | |
| "Dwelling houses in the old Irish barbarous manner" : archaeological evidence for Gaelic architecture in an Ulster plantation village | Horning, Audrey J. | Article in Book | Four Courts Press | 2001 |
| 'Breaching disciplinary boundaries' : reflections on a half-century of the GSIHS | Duffy, Patrick J. | Article in Journal | | 2019 |
| 'Nearly all that geography can require': the state and the construction of a geographical archive in nineteenth-century Ireland | Duffy, Patrick J. | Article in Book | | 2012 |
| 'Through American eyes' : 100 years of Ireland in National Geographic magazine | Duffy, Patrick J. | Article in Book | | 2013 |
| A lease from the estate of the Earl of Essex 1624 | Duffy, Patrick J. | Article in Journal | | 1990 |
| Armagh and Kells | Duffy, Patrick J. | Article in Book | | 2013 |
| Aspects of famine and the Farney landscape | Duffy, Patrick J. | Article in Journal | | 1996 |
| Assisted emigration from the Shirley estate, 1843-54 | Duffy, Patrick J. | Article in Journal | | 1992 |
| At the anvil: essays in honour of William J. Smyth | | Monograph or Collective Volume | | 2012 |
| Carleton, Kavanagh, and the south Ulster landscape, c.1800-1950 | Duffy, Patrick J. | Article in Journal | | 1985 |
| Carrickmacross | Duffy, Patrick J. | Article in Book | | 1995 |
| Colonial spaces and sites of resistance : landed estates in 19th century Ireland | Duffy, Patrick J. | Article in Book | | 2005 |
| Conflicts in tourism and heritage | Duffy, Patrick J. | Article in Journal | | 1993 |
| Continuity and change in the border landscape | Duffy, Patrick J. | Article in Book | | 2002 |
| Disencumbering our crowded places : theory and practice of estate emigration schemes in mid-nineteenth-century Ireland | Duffy, Patrick J. | Article in Book | | 2004 |
| Eighteenth-century estate maps | Duffy, Patrick J. | Article in Journal | | 1997 |
| Emigrants and the estate office in the mid-nineteenth century : a compassionate relationship? | Duffy, Patrick J. | Article in Book | | 1997 |
| Exploring the history and heritage of Irish landscapes | Duffy, Patrick J. | Monograph or Collective Volume | Four Courts | 2007 |
| Exploring townland geographies : landholding and landscape in County Monaghan from the sixteenth century | Duffy, Patrick J. | Article in Book | | 2017 |
| Farney in 1634 : an examination of John Raven's survey of the Essex estate | Duffy, Patrick J. | Article in Journal | | 1983 |
| Gaelic Ireland, c.1250-c.1650 : land, lordship and settlement | | Monograph or Collective Volume | Four Courts | 2001 |
| Gaelic Ireland, c.1250-c.1650: Land, Lordship, and Settlement | | Monograph or Collective Volume | Four Courts Press | 2001 |
| Geographical perspectives on the borderlands | Duffy, Patrick J. | Article in Book | | 1989 |
| Heritage and history : exploring landscape and place in Co. Meath | Duffy, Patrick J. | Article in Journal | | 2000 |
| Historians in modern Monaghan | Duffy, Patrick J. | Article in Book | | 2017 |
| Housing history, Kilclone, county Meath | Duffy, Patrick J. | Article in Book | | 2011 |
| Introduction : migration management in Ireland | Duffy, Patrick J. | Article in Book | | 2004 |
| Introduction : recovering Gaelic Ireland c.1250-1650 | Duffy, Patrick J. | Article in Book | | 2001 |
| Irish landholding structures and population in the mid-nineteenth century | Duffy, Patrick J. | Article in Journal | | 1977 |
| Landscapes of south Ulster : a parish atlas of the diocese of Clogher | Duffy, Patrick J. | Monograph or Collective Volume | Queen's University of Belfast, Institute of Irish Studies | 1993 |
| Literary reflections on Irish migration in the nineteenth and twentieth centuries | Duffy, Patrick | Article in Book | | 1995 |
| Locality and changing landscape : geography and local history | Duffy, Patrick J. | Article in Book | | 1998 |
| Management problems on a large estate in mid-nineteenth-century Ireland : William Steuart Trench's report on the Shirley estate in 1843 | Duffy, Patrick J. | Article in Journal | | 1997 |
| Mapping the Famine in Monaghan | Duffy, Patrick J. | Article in Book | | 2012 |
| Maps of Farney in Longleat, Wiltshire and Warwick County Record Office | Duffy, Patrick J. | Article in Journal | | 1987 |
| Monaghan history and society : interdisciplinary essays on the history of an Irish county | | Monograph or Collective Volume | Geography Publications | 2017 |
| Ordnance Survey maps and official reports | Duffy, Patrick J. | Article in Book | | 2011 |
| Patterns of landownership in Gaelic Monaghan in the late 16th century | Duffy, Patrick J. | Article in Journal | | 1981 |
| Perspectives on the making of the Cavan landscape | Duffy, Patrick J. | Article in Book | | 1995 |
| Placing migration in history : geographies of Irish population movements | Duffy, Patrick J. | Article in Book | | 2006 |
| Recovering Gaelic Ireland, c.1250-c.1650 | Duffy, Patrick J.Edwards, David, 1963-FitzPatrick, Elizabeth | Article in Book | | 2001 |
| Remarks on viewing the estate of John Shirley, Esquire, situate at Carrickmacross in the barony of Farney, in the county of Monaghan, Ireland | Duffy, Patrick J. | Article in Journal | | 1987 |
| Small farm settlement: landscapes in transition | Duffy, Patrick | Article in Journal | | 2017 |
| Social and spatial order in the MacMahon lordship of Airghialla in the late sixteenth century | Duffy, Patrick J. | Article in Book | | 2001 |
| The changing rural landscape 1750-1850 : pictorial evidence | Duffy, Patrick J. | Article in Journal | | 1994 |
| The evolution of estate properties in south Ulster 1600-1900 | Duffy, Patrick J. | Article in Book | | 1988 |
| The famine in County Monaghan | Duffy, Patrick J. | Article in Book | | 1997 |
| The nature of the medieval frontier in Ireland | Duffy, Patrick J. | Article in Journal | | 1983 |
| The nuts and bolts of making landscapes in the mid-nineteenth century | Duffy, Patrick J. | Article in Journal | | 1997 |
| The shape of the parish | Duffy, Patrick J. | Article in Book | | 2006 |
| The territorial identity of Kildare's landscapes | Duffy, Patrick J. | Article in Book | | 2006 |
| The territorial organization of Gaelic landownership and its transformation in County Monaghan, 1591-1640 | Duffy, Patrick J. | Article in Journal | | 1981 |
| The town of Monaghan : a place inscribed in street and square | Duffy, Patrick J. | Article in Book | | 2004 |
| To and from Ireland : planned migration schemes c.1600-2000 | | Monograph or Collective Volume | Geography Publications | 2004 |
| Trends in nineteenth- and twentieth-century settlement | Duffy, Patrick J. | Article in Book | | 1999 |
| Unwritten landscapes : reflections on minor place-names and sense of place in the Irish countryside | Duffy, Patrick J. | Article in Book | | 2004 |
| Using GIS to map the evolution of the Gaeltacht | Duffy, PatrickMcCarron, StephenNí Bhrádaigh, EmerWalsh, John | Article in Journal | | 2007 |
| Writing Ireland : literature and art in the representation of Irish place | Duffy, Patrick J. | Article in Book | | 1997 |
| ‘Important places and great events’ : Patsy Duffy’s diaries of everyday life in Monaghan in the 1930s and 1940s | Duffy, Patrick J. | Article in Book | | 2017 |