| An Irish ambassador at the Spanish court, 1569-74 | Binchy, D. A. (Daniel Anthony), 1900-1989 | Article in Journal | | 1921 |
| Ireland and Spain in the reign of Philip II | García Hernán, Enrique | Monograph or Collective Volume | Four Courts | 2009 |
| Ireland under the Tudors : with a succinct account of the earlier history. 3 vols. | Bagwell, Richard | Monograph or Collective Volume | Longmans, Green | 1885 (v. I & II)
1890 (v. III) |
| Ireland's armada legacy | Flanagan, Laurence | Monograph or Collective Volume | Gill & Macmillan | 1988 |
| Irlanda y el rey prudente | García Hernán, Enrique | Monograph or Collective Volume | Ediciones del Laberinto | 2000 |
| La cuestión Irlandesa en la política internacional de Felipe II | Garcia Hernan, Enrique | Thesis | | 1999 |
| La cuestión Irlandesa en la política internacional de Felipe II | García Hernán, Enrique | Monograph or Collective Volume | Servicio de Publicaciones, Universidad Complutense | 2003 |
| Notes and documents. A letter from Antonio de Guaras to the Irish rebels [dated1573] | Guaras, Anthonius de | Article in Journal | | 1893 |
| O'Sullivan Bere : the story of the fight for the southern ports and the great retreat | De Blacam, Aodh | Article in Journal | | 1947 |
| Philip II of Spain | Petrie, Charles, Sir | Monograph or Collective Volume | Eyre & Spottiswoode | 1963 |
| Planes militares de Felipe II para conquistar Irlanda, 1569-1578 | García Hernán, Enrique | Article in Book | | 2002 |
| The guardian of Donegal Friary [Sean MacGrath] appeals to Philip II of Spain, 1596 | Millett, Benignus | Article in Journal | | 1985 |
| The Irish appeal of 1593 to Spain : some light on the genesis of the 'Nine Years' War' | Silke, John J. | Article in Journal | | 1959 |
| The military order of St Patrick, 1593 | Walsh, M. K. | Article in Journal | | 1979 |