| Diplomatic elements in Willibrod's autobiography | Pelteret, David A.E.
| Article in Journal | | 2012 |
| Re-discovering St Willibrord, patron saint of Luxembourg and his County Carlow connection | Mulligan, Dermot | Article in Journal | | 2018 |
| Re-discovering St. Willibrord, Patron Saint of Luxembourg, first apostle of the Netherlands and his County Carlow connection : Carlow's impact on Medieval Europe | Kauthen, PierrreMulligan, DermotÓ Cróinín, Dáibhí | Monograph or Collective Volume | Carlow County Council | 2018 |
| Sint Willibrord in Waalre en Valkenswaare : ostaan en ontwikkeling ener vroege christengemeenschap tot parochie | Bannenberg, G. P. J. | Monograph or Collective Volume | De Koepel | 1948 |
| St Willibroird's Carlow connection | Mulligan, Dermot | Article in Journal | | 2018 |
| St Willibrord | Seiler, Emile | Article in Journal | | 2000 |
| St Willibrords roomsche reizen | Linderboom, J. | Article in Journal | | 1948 |
| St. Cuthbert, his Cult and his Community to AD 1200 | | Monograph or Collective Volume | | 1989 |
| St. Willibrord and Ireland | Janssens, H. | Article in Journal | | 1952 |
| The calendar of St Willibrord from MS. Paris Lat. 10837 : facsimile with transcription, introduction and notes | | Monograph or Collective Volume | Boydell for the Henry Bradshaw Society | 1998 |
| The Ripon Connection? Willibrord, Wilfrid, and the Mission to Frisia | Ziegler, Michelle | Article in Journal | | 2003 |
| Willibrord and the Christianisation of Europe | Summer, Michel | Article in Journal | | 2022 |
| Willibrord en zijn tijd | Lampen, W. | Monograph or Collective Volume | Van Kampen | 1948 |
| Willibrord tussen Ierland en Rome : een bundel historische en muzikaal-liturgische bijdragen | | Monograph or Collective Volume | Keltische Draak | 1995 |
| Willibrord's scriptorium at Echternach and the relationship to Ireland and Lindisfarne | Netzer, Nancy | Article in Book | | 1989 |
| Willibrordus en Pirminus | Boeren, P. C. | Article in Journal | | 1949 |