| Alexandri III Romani Pontificis Opera omnia, id est epistolae et privilegia ordine chronologico digesta : accedunt variorum ad ipsum epistola | | Monograph or Collective Volume | | 1855 |
| Another look at Lord John Russell and the papal aggression, 1850 | Paz, D. G. | Article in Journal | | 1982 |
| Anti-Irish intrigues at the Vatican | Woods, C. J. (Christopher John) | Article in Journal | | 1969 |
| Britain and the continent 1000-1300 : the impact of the Norman Conquest | Matthew, Donald | Monograph or Collective Volume | Hodder Arnold | 2005 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland | Anonymous | Monograph or Collective Volume | HMSO | 1955 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.18 : Pius III and Julius II. Vatican Registers (1503-1513); Lateran Registers (1503-1508) | | Monograph or Collective Volume | Stationery Office for Irish Manuscripts Commission | 1989 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : papal letters Vol.19 : 1503-1513. Lateran registers part 2 | | Monograph or Collective Volume | Irish Manuscripts Commission | 1998 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland : vol. 14 : papal letters, 1484-1492 | | Monograph or Collective Volume | Stationery Office | 1960 |
| Calendar of entries in the Papal Registers relating to Great Britain and Ireland, vols. I - XIII. Papal letters | | Monograph or Collective Volume | | 1893 |
| Calendar of entries in the papal registers relating to Great Britain and Ireland. Vol. 13, parts 1-2 | | Monograph or Collective Volume | [s.n.] | 1955 |
| Calendar of entries in the Papal registers relating to Great Britain and Ireland. Vol. XVIII : Pius III and Julius II : Vatican registers (1503-1513); Lateran registers (1503-1508) | | Monograph or Collective Volume | The Stationery Office [for the Irish Manuscripts Commission] | 1989 |
| Inventario dei Registri Vaticani | Giusti, Martino | Monograph or Collective Volume | | 1981 |
| Ireland and Anglo-papal relations, 1880-5 | Woods, C. J. (Christopher John) | Article in Journal | | 1972 |
| Ireland and Rome : the double inheritance of Christian Northumbria | Bonner, Gerald | Article in Book | | 1979 |
| John Michael Wright, An Account of His Excellence Roger Earl of Castlemaine's Embassy, from His Sacred Majesty James the IId King of England, Scotland, France and Ireland & to His Holiness Innocent IX | Crobett, Margery | Article in Journal | | 1990 |
| L'Archivio Segreto Vaticano | Giusti, Martino | Monograph or Collective Volume | | 1978 |
| On Her Majesty's Secret Service : Gladstone, Ireland and Pope Leo XIII, 1881-1885/86 | Urbach, Karina | Article in Book | | 2005 |
| Pope John XXII, King Edward and Ireland | Watt, J. A. | Article in Journal | | 1956 |
| Sources for British and Irish history in the Instrumenta Miscellanea of the Vatican Archives | Burns, C. S. (Charles S.) | Article in Journal | | 1971 |
| The chronicle of Adam Usk, 1377-1421 | Adam, of Usk, c.1350-1430Given-Wilson, Christopher | Monograph or Collective Volume | Clarendon Press | 1997 |
| The pope’s man in London: Anglo-Vatican relations, the nuncio question and Irish concerns, 1938-82 | Ó Corráin, Daithí | Article in Journal | | 2020 |
| The Vatican Archives : with special reference to sources for British medieval history | MacFarlane, Leslie | Article in Journal | | 1959 |
| Vatican diplomacy and the mission of Rinuccini to Ireland | Ó hAnnracháin, Tadhg | Article in Journal | | 1993 |