Resources — Ogham Scholarship, Digital Projects, and Further Reading

Online

Digital projects and corpora

These are the active research projects and databases. If you want to look at the stones themselves — the inscriptions, the images, the locations — these are the places to start.

The OG(H)AM Project

ogham.glasgow.ac.uk

University of Glasgow and Maynooth University, 2021–2024. The most comprehensive current digital corpus of Ogham inscriptions. Building on and extending the earlier databases, with full scholarly apparatus. The primary reference for current stone counts and readings.

Ogham in 3D

ogham.celt.dias.ie

Dublin Institute for Advanced Studies. 163 high-resolution digital replicas of Ogham stones, created using Structure from Motion photogrammetry. Allows close examination of inscriptions that are difficult or impossible to access in person. Invaluable for reading weathered stones.

Corca Dhuibhne 3D

cd3d.ie

A focused project on the Dingle Peninsula stones, initiated 2015/2016. Músaem Chorca Dhuibhne and Oidhreacht Chorca Dhuibhne, invited by the Discovery Programme and Ogham in 3D, sponsored by Kerry Group. Local volunteers trained in Structure from Motion photogrammetry. The project that brought the densest concentration of Ogham stones into digital form.

Deep Maps Kerry

deepmapskerry.ie

Sacred Heart University Dingle. A layered cultural geography of the Kerry landscape, incorporating Ogham sites within a broader archaeological and historical mapping project.

Core scholarship

Essential reading

Start here

White, N. (2021). Our Ancient Landscapes: Ogham Stones in Ireland. Heritage Council. ISBN 978-1-906304-57-7. The most accessible serious introduction currently available. Sound scholarship, clearly presented. The source for the ~127 Kerry figure used throughout this site. An excellent starting point for any reader coming to the subject without prior knowledge.

McManus, D. (1991). A Guide to Ogam. Maynooth: An Sagart. The authoritative scholarly reference on the alphabet. McManus's conclusion — that only six of the twenty original characters can be said to have genuine tree associations — is the source for that claim wherever it appears on this site. Requires some linguistic background but is clearly written.

Stifter, D. (2022). Ogam: Language, Writing, Epigraphy. The most recent comprehensive scholarly treatment of Ogham as a linguistic and epigraphic system. Covers the dating evidence in detail, including the key insight that the alphabet contains characters for sounds that had already disappeared from Irish by the time most stones were carved.

The letter names

McManus, D. (1988). "Irish Letter-Names and Their Kennings." Ériu 39, pp. 127–168. The core article on the letter-name evidence. Read alongside McManus (1991).

Calder, G. (ed. and tr.) (1917). Auraicept na n-Éces. Edinburgh. Edition and translation of the 7th-century Scholars' Primer — the primary medieval source for the letter names and alphabet structure. The passage quoted on the Alphabet page ("Others say it is not from men that the vowels are named but from trees, though some of these trees are not known today") comes from this edition.

The corpus

Macalister, R.A.S. (1945, 1949). Corpus Inscriptionum Insularum Celticarum. 2 vols. Dublin: Stationery Office. Macalister's CIIC catalogued every known Ogham stone and is still the reference source for stone numbers (e.g. CIIC 23 for the Killeen Cormac bilingual stone). Its readings have been substantially revised by subsequent scholarship, but it remains an essential reference. Available in some university libraries; some entries now superseded by the OG(H)AM Project.

Stifter, D., White, N. and Forsyth, K. (2024). "The Periods of Ogam Usage." In Mullen and Woudhuysen (eds.), The Oxford Handbook of Celtic Languages. The most recent synthesis of the dating evidence.

Swift, C. (1997). Ogam Stones and the Earliest Irish Christians. Maynooth Monographs 2. Maynooth: St Patrick's College. Examines the relationship between Ogham inscription and the spread of Christianity — directly relevant to the Arraglen stone and the earliest uses of Christian vocabulary in Irish.

By topic

Specialist sources

Kerry

Bennett, I. and Uí Shíthigh, B. (1995). Ogham Stones of the Dingle Peninsula. Ballyferriter: Oidhreacht Chorca Dhuibhne. The focused study of the Dingle Peninsula stones. The starting point for anyone researching the densest concentration of Ogham anywhere.

O'Sullivan, A. and Sheehan, J. (1996). The Iveragh Peninsula: An Archaeological Survey of South Kerry. Cork University Press. Covers the Ring of Kerry territory, including Ogham stones in the context of the wider archaeological landscape.

Mahon, W. (1990). "Glasraige, Tóecraige, and Araid." Proceedings of the Harvard Celtic Colloquium 8. Establishes the connection between the MUCOI TOICACI formula on the Coolmagort stones and the genealogical record in Rawlinson B.502.

Stifter, D. (2017). An Ogham Stone in the Black Valley. Academia.edu. On the 1995 Black Valley discovery — a reminder that the corpus remains open.

Myths and forgeries

Graves, R. (1948). The White Goddess: A Historical Grammar of Poetic Myth. London: Faber and Faber. The source of the Celtic tree calendar, read on this site in the context of the Myths & Forgeries essay. The Macalister dismissal quotation is on p. 117. A significant work of imagination; not a reliable source on Ogham.

Hutton, R. (1999). The Triumph of the Moon: A History of Modern Pagan Witchcraft. Oxford University Press. The fullest historical account of the neo-pagan movement and the role of Graves's work in generating it. Scholarly, balanced, and essential for understanding how the invented tradition spread.

Curley, T.M. (2009/2014). Samuel Johnson, the Ossian Fraud, and the Celtic Revival in Great Britain and Ireland. Cambridge University Press. On the Macpherson/Ossian forgery and its cultural consequences.

Ellis, P.B. "The Fabrication of Celtic Astrology." The Astrological Journal. One of the direct scholarly rebuttals of Graves's Celtic tree calendar. With Boutet, M-G., "Celtic Astrology: A Modern Hoax" — the two principal formal demolitions of the invented tradition.

The long life — manuscript and survival

Forsyth, K. and Kasten, M. (2023). "OG(H)AM." Runes et al., Vol. 1. The source for the Minchin Manuscript assessment — the document that established the Kerry origin and c.1849 date of NLS Adv. MS 50.3.11.

Carney, J. (1975). "The Invention of the Ogom Cipher." Ériu 26, pp. 53–65. The foundational study of the cipher variant tradition — the 100+ alternative Ogham alphabets documented in the Book of Ogham. Essential for understanding Ogham's life as an intellectual rather than monumental tradition.

Raftery, B. (1969). "A Late Ogham Inscription from Co. Tipperary." Journal of the Royal Society of Antiquaries of Ireland 99. The source for the 1802 Ahenny gravestone — the last known use of Ogham on a standing stone.

Scotland and Pictish Ogham

Forsyth, K. (1996). The Ogham Inscriptions of Scotland: An Edited Corpus. PhD thesis, Harvard University. The authoritative work on Scottish Ogham, arguing for a Brythonic Celtic interpretation of the Pictish inscriptions.

Forsyth, K. (1997). Language in Pictland. Utrecht: de Keltische Draak. Accessible shorter treatment of the Pictish language question.

Rodway, S. (2020). "The Ogham Inscriptions of Scotland." Journal of Celtic Linguistics. The most serious recent direct challenge to Forsyth's Brythonic interpretation. Cannot be dismissed; the Pictish question remains genuinely open.

Unicode and the digital script

Everson, M. (1994). Proposal for encoding the Ogham script in ISO 10646. WG2 N1103R. Evertype. Available at evertype.com. The formal proposal that led to Ogham's inclusion in the Unicode standard. The story of its passage through the Unicode committee — including the Becker obstacle and the Space Mark dispute — is told in full on the Alphabet page.

Doyle, A. (2024). "The History of Digital Ogam." Guest blog, OG(H)AM Project, University of Glasgow. The best narrative account of Ogham's path into Unicode, fully footnoted to primary committee documents. Accessible and authoritative.

Wales and the Déisi

Charles-Edwards, T.M. (2000). Early Christian Ireland. Cambridge University Press. The standard scholarly reference on the context of the Irish diaspora into Britain, including the Déisi movement into Wales.

A note on sourcing. Throughout this project, every claim has been verified against primary or reliable secondary sources. AI was used extensively as a research correlator — helping to organise material, identify candidate sources, and stress-test whether claims could be substantiated. That process also exposed its limits: two AI-generated research summaries were rejected after the sources they cited could not be verified, and a third error — a tribal gloss traced to an AI-generated wiki rather than any scholarly source — was caught and corrected during site review. Where a source is cited on this site, it exists and says what it is stated to say. If you spot an error, or know of a source that should be included, please get in touch: hello@ajb.co.

Special thanks are due to Nora White, Katherine Forsyth, Luca Guariento, and the full OG(H)AM team at the Dublin Institute for Advanced Studies and the University of Glasgow, who generously gave permission to reference the OG(H)AM Project — the upgraded Ogham in 3D database. Without that corpus, this site would not be as complete or as accurate as it is. The project should be cited as: Katherine Forsyth, Luca Guariento, Deborah Hayden, Megan Kasten, Patricia O'Connor, David Stifter, Nora White, Ogham in 3D, v2.0 (2025), Dublin Institute for Advanced Studies, ogham.celt.dias.ie.