| 'Mani maidi an nem...' : ringing changes on a cosmic motif | Sayers, William | Article in Journal | | 1986 |
| A cut above : ration and station in an Irish king's hall | Sayers, William | Article in Journal | | 1990 |
| A Swedish traveller's reception on an Irish stage set. Snorri Sturluson's 'Gylfaginning' | Sayers, William | Article in Journal | | 2008 |
| Airdrech, sirite and other early Irish battlefield spirits | Sayers, William | Article in Journal | | 1991 |
| Anglo-Norman verse on New Ross and its founders | Sayers, William | Article in Journal | | 1992 |
| Contracting for combat : flyting and fighting in Táin Bó Cuailnge | Sayers, William | Article in Journal | | 1997 |
| Deficient royal rule : the king's proxies, judges and the instruments of his fate | Sayers, William | Article in Book | | 2008 |
| Early Irish attitudes towards hair and beards, baldness and tonsure | Sayers, William | Article in Journal | | 1991 |
| Fantastic technology in early Irish literature | Sayers, William | Article in Journal | | 2014 |
| Grendel's mother : Icelandic Gryla and Irish nechta scene : eviscerating fear | Sayers, William | Article in Journal | | 1997 |
| Irish Diet in the Eleventh Century as Reflected in the Satire of ‘Aislinge Meic Con Glinne’ | Sayers, William | Article in Book | Royal Irish Academy | 2024 |
| Mesocosms and the organization of interior space in early Ireland | Sayers, William | Article in Journal | | 2015 |
| Mesocosms and the organization of interior space in early Ireland | Sayers, William | Article in Journal | | 2015 |
| Netherworld and Otherworld in early Irish literature | Sayers, William | Article in Journal | | 2012 |
| Old Irish fert 'tie-pole', fertas 'swingle-tree', and the seeress Fedelm | Sayers, William | Article in Journal | | 1984 |
| Portraits of the Ulster Hero Conall Cernach : a case for Waardenburgh's syndrome? | Sayers, William | Article in Journal | | 2006 |
| Qualitative and quantitative criteria for prosperous royal rule : Notes on Audacht Morainn and a Vedic Indian analogue | Sayers, William | Article in Journal | | 2014 |
| Review article. The cult of the sacred centre | Sayers, William | Article in Journal | | 2013 |
| Supernatural pseudonyms | Sayers, William | Article in Journal | | 1994 |
| Teithi Hen, Gúaire mac Áedáin, Grettir Ásmundarson : the king's debility, the shore, the blade | Sayers, William | Article in Journal | | 2007 |
| Textual notes on descriptions of the old Irish chariot and team | Sayers, William | Article in Journal | | 1991 |
| The Ancestry of John Doe: A Squib | Sayers, William | Article in Journal | | 2011 |
| The nickname Björn Buna and the Celtic interlude in the settlement of Iceland | Sayers, William | Article in Journal | | 1996 |
| The patronage of 'la Conquête d'Irlande | Sayers, William | Article in Journal | | 1967 |
| Twelfth-Century Norman and Irish Literary Evidence for Ship-Building and Sea-Faring Techniques of Norse Origin | Sayers, William | Article in Journal | | 2005 |
| Varia IV. Three charioteering gifts in Táin Bó Cúailgne and Mesca Ulad : immorchor ndelend, foscul ndíriuch, léim dar boilg | Sayers, William | Article in Journal | | 1981 |
| Varia VII : the deficient ruler as avian exile : Nebuchadnezzar and Suibhne Geilt | Sayers, William | Article in Journal | | 1992 |
| Vífull - captive Gael, freeman settler, Icelandic forbear | Sayers, William | Article in Journal | | 1994 |
| Warrior initiative and some short Celtic spears in the Irish and learned Latin traditions | Sayers, William | Article in Journal | | 1989 |