Runiform scripts

Ogham

Ireland's own alphabet, cut as one to five strokes along the edge of a standing stone. Twenty letters in four families of five, designed for a language that no longer exists, and famous today for something it never was.

20
primary letters
~400
surviving stones
c. 400–700
CE on stone

The alphabet

Twenty feda in four aicmí, followed by the forfeda added later. Each card gives the letter's actual root meaning and, separately, the tree the medieval glossators assigned it.

Ogham glyphs are shown in Unicode, laid out left to right. On a standing stone the letters run bottom to top along the arris, so this row is a convenience rather than a facsimile.

Aicme Beithe

1–5

The B group: one to five strokes cut to the right of the stemline, or below it when the line runs horizontally. B, L, F, S, N.

ᚁ
1

Beithe

b /b/

birch tree

One of the eight feda whose tree name is genuine. Old Irish beithe, cognate with Welsh bedw and Latin betula.

ᚂ
2

Luis

l /l/

a blaze, or a plant

The first name the tree theory breaks on. Luis has no etymological link to rowan; it means a blaze or a herb, and the kennings are about cattle.

ᚃ
3

Fern

f /w/ > /f/

alder tree

Genuinely arboreal, from Proto-Indo-European *wernā. Its kennings cover shields and milk pails, the two things alder was actually for.

ᚄ
4

Sail

s /s/

willow tree

Genuine, and cognate with Latin salix. Its kennings run from the pallor of a corpse to the first nectar of the year.

ᚅ
5

Nin

n /n/

a forked branch; a weaver's beam

Not a tree. Nin means a fork or a loft, and became the word for an Ogham letter itself, since every letter forks off the stemline.

Aicme hÚatha

6–10

The H group: one to five strokes to the left of the stemline, or above it. H, D, T, C, Q. It holds the labiovelar /kʷ/ that Old Irish later lost.

ᚆ
6

Úath

h /j/ (disputed)

terror

Means horror, and all three kenning lists agree. The whitethorn gloss is a later rationalisation from the idea of a fearsome thorn barrier.

ᚇ
7

Dair

d /d/

oak tree

Genuine, from PIE *doru-, wood. Its kennings are about the master craftsman as much as the tree.

ᚈ
8

Tinne

t /t/

an iron bar

Metallurgy, not botany. Tinne is an ingot, and its kennings name coal-marrow and the blade of a weapon.

ᚉ
9

Coll

c /k/

hazel tree

Genuine, cognate with Welsh collen. The hazel of the Salmon of Knowledge, and a serious calorie source.

ᚊ
10

Ceirt

q /kʷ/

a bush, or a rag

Preserves the labiovelar /kʷ/ that Old Irish lost. Its root is the PIE oak word behind Latin quercus, but by the Old Irish period it had collided with the word for a rag.

Aicme Muine

11–15

The M group: one to five strokes cut diagonally straight across the stemline. M, G, NG, Z, R. The most archaic sounds and the least botanical names in the alphabet.

ᚋ
11

Muin

m /m/

the neck or upper back

A three-way homonym in Old Irish, and the kenning-makers used all three senses at once. The vine gloss is pure scholastic reaching.

ᚌ
12

Gort

g /ɡ/

an enclosed field

Cognate with English garden. Every kenning describes pasture and cattle; the ivy gloss has nothing behind it.

ᚍ
13

nGéadal

ng /ɡʷ/

slaying

From PIE *gwen-, to slay. The kennings pair the beginning of slaughter with the physician's livelihood, which is a bleak piece of economics.

ᚎ
14

Straif

z /st/ or /sw/

sulphur

Chemistry rather than trees. Its kennings cover dyeing, guarded secrets and the smoke of burning sulphur.

ᚏ
15

Ruis

r /r/

redness

All three kenning lists describe a face flushed with shame or rage. The elder gloss works only through the colour of its berries.

Aicme Ailme

16–20

The vowels: one to five notches cut square across the stemline. A, O, U, E, I. Not one of their names is securely a native Irish tree, which is where the tree theory finally collapses.

ᚐ
16

Ailm

a /a/

unknown; the sound A itself

Etymology obscure. Its kennings are metalinguistic, describing the vowel as the first sound of a cry or an answer rather than any plant.

ᚑ
17

Onn

o /o/

ash tree

The strangest case in the row: the name is a genuine tree, and the medieval glossators ignored it and assigned furze instead.

ᚒ
18

Úr

u /u/

soil, and the grave

Secure, and grim. Its kennings run from cold dwellings and the shroud of a corpse to the propagation of plants.

ᚓ
19

Edad

e /e/

unknown

One half of a rhyming pair with Idad, and probably invented to fill out the vowel series. Its kennings are corrupt in the manuscripts.

ᚔ
20

Idad

i /i/

unknown; probably yew

The last of the primary twenty, five notches deep. Its kennings, oldest of trees and fairest of the ancients, fit the yew even if the etymology will not confirm it.

The forfeda

21–26

Extra letters, engineered in the manuscript period for sounds the original twenty could not write. Their shapes are composite loops and lattices rather than counted strokes, and with one exception they barely appear on stone.

ᚕ
21

Ébad

ea /k/ or /x/, later ea

the KOI formula; later a salmon

The only forfid that appears on stones with any regularity, almost always in KOI, the Ogham equivalent of hic iacet.

ᚖ
22

Ór

oi /oi/

gold

A Latin loanword given a letter. Its kennings praise gold as the most venerable of substances.

ᚗ
23

Uilleann

ui /ui/

an elbow

Named for its own shape. The letter bends, and uilleann is the Old Irish word for an elbow.

ᚘ
24

Ifín

io /p/, later io

originally the letter P

Invented because Irish had lost /p/ entirely and Latin loanwords needed it, then stripped of that value by later scribes tidying the forfeda into vowels.

ᚙ
25

Emancholl

ae /x/, later ae

twin of hazel

Two C-shapes latticed over the stemline. Its kenning, the groan of a sick person, imitates the scraping fricative it once stood for.

ᚚ
26

Peith

p /p/

a soft B

The replacement P, invented after Ifín lost the sound. A modified Beithe, called beithe bog, soft birch.

Where we know it from

Four hundred stones, two medieval treatises, three lists of kennings, and one twentieth-century novel that did more damage than all of them.

The southern Irish corpus

Kerry, Cork and Waterford 4th–7th century

Most of the roughly 400 surviving Ogham stones stand in three counties. They are memorials and territorial claims at once, recording a name in the genitive and the ancestry that justified holding the land.

MAQI MUCOI and the formula stones

Ireland and the Irish diaspora 4th–7th century

The corpus is intensely formulaic. MAQI is son of, MUCOI is of the tribe or kindred of, ANM is name of. MAQI MUCOI alone appears around eighty times, which is why the stones tell us so much about grammar and almost nothing about anything else.

The KOI stones

Ireland 5th–6th century

A handful of inscriptions carry KOI, written with the forfid Ébad, functioning as the Irish equivalent of Latin hic iacet, here lies. It is the only supplementary letter that appears on orthodox monuments with any regularity.

Wales, Scotland, Cornwall and Man

Britain 5th–7th century

Irish settlement carried the script across the sea. Several Welsh stones are bilingual, carrying Ogham on the edge and Latin on the face, which is how the values of some letters were first confirmed.

Killogrone stone (CIIC 235)

County Kerry 6th century

An unusually dense inscription combining formula words with supplementary letters, and a standing demonstration that the orthodox corpus is not uniformly simple.

Auraicept na n-Éces

Ireland 7th–8th century, expanded later

The Scholars' Primer: the treatise that organises the letters into aicmí, supplies the tree names, and works Ogham into biblical pseudohistory by crediting its invention to Fenius Farsa at the Tower of Babel.

In Lebor Ogaim

Book of Ballymote preserved 14th century

The Ogam Tract, which catalogues something like a hundred variant Oghams: bird-ogham, colour-ogham, shield-ogham, water-ogham and the rest. These are ciphers rather than alphabets, and they show a scholarly class playing with a script nobody needed any more.

The three Bríatharogaim

Ireland Old Irish period

Three independent lists of two-word kennings, ascribed to Morann mac Moín, Mac ind Óc and Cú Chulainn. They are the closest thing to a rune poem Ogham has, and they are the main evidence that most of the letters were never named after trees.

Damian McManus

modern scholarship 1991

A Guide to Ogam, the standard modern treatment, which worked back through the kennings and the Old Irish lexicon and established that only about eight of the twenty names are genuinely botanical. Most of what this page says about etymology rests on that work.

Robert Graves, The White Goddess

modern invention 1948

A poet's book that grafted an invented thirteen-month Celtic Tree Calendar onto Ogham. It is the source of nearly every tree-and-month correspondence in circulation today, it has no historical basis, and Graves did not claim to be doing history.

The Super Petram charm

Donegal and Meath recorded 19th century

Ogham variants turn up in folk healing charms against toothache, framed around St Peter complaining of a sore tooth to Christ at the Jordan. Evidence that the script kept an aura of authority for centuries after it stopped being readable.

What Ogham actually is

Ogham is an alphabet invented to write Primitive Irish, the oldest recorded stage of the Goidelic languages, and it was cut into standing stones in Ireland from roughly the fourth century to the seventh.

Its design is unlike anything Germanic. There is no repertoire of letter-shapes to memorise. There is a stemline — on a monument, the natural edge or arris of the stone itself — and letters are made by cutting one to five strokes in one of four positions relative to it: to the right, to the left, diagonally across, or as notches square on the line. Four positions times five counts gives exactly twenty letters, and the system is closed by the limits of human perception: nobody can count six parallel strokes at a glance.

The letters are called feda, woods, and a group of five is an aicme, a family. On stone the text runs bottom to top up the left edge, over the top, and down the right.

Why it is in a section called Runes

It is not runic. Ogham has no relationship to the Elder Futhark: different language family, different design principle, different origin, no shared letters. Nothing in it descends from anything in the Germanic rows, and no rune descends from it.

What it shares is a job and a look. Both are angular scripts cut into hard materials by people whose neighbours wrote in Latin, both were used for memorials and claims of ownership, and both acquired an occult afterlife they never asked for. That is why it sits here, and the distinction is worth keeping in view.

The tree alphabet is medieval, and mostly wrong

This is the single most important thing on the page.

Ogham is famous as the Celtic Tree Alphabet, in which every letter is a tree and the alphabet encodes a calendar of sacred woods. That belief has two sources, and neither is ancient Irish practice.

The first is medieval scholarship. Once Latin had displaced Ogham for real writing, the script migrated into the monasteries and became an object of study. Scribes noticed the letters were called feda, woods, and that a handful of them genuinely were named after trees. They then worked systematically to make all of them trees, and where a name plainly meant something else, they invented a justification. The Auraicept na n-Éces is candid enough to admit that some of its trees are not known to anyone, and to attribute the list to a mysterious Ogham Book of Woods.

The second is a novel. In 1948 Robert Graves published The White Goddess and grafted an invented thirteen-month tree calendar onto the alphabet. Almost every tree-and-month correspondence in modern circulation traces to that book. It is a work of poetic imagination, Graves was open about the fact that it was not scholarship, and it is the direct ancestor of most of what is sold as Ogham divination.

What the evidence actually shows, worked out chiefly by Damian McManus, is that only about eight of the twenty letter names have secure botanical etymologies. The rest name an ingot of metal, sulphur, a field, a fork or weaver's beam, redness, terror, killing, soil, an elbow, gold, and — twice — nothing anyone can reconstruct.

The kennings, and what they are for

Ogham has no rune poem. What it has is better in some ways: three independent lists of two-word kennings called Bríatharogaim, ascribed to Morann mac Moín, Mac ind Óc and Cú Chulainn.

Each gives a compressed phrase for every letter, and because the three lists were composed separately, agreement between them is meaningful evidence. Where all three describe a flushed face, the letter means redness. Where all three describe fear, the letter means terror. Where the tree gloss contradicts all three, the tree gloss is the intruder.

Read as a set, they are a portrait of early Irish material life that has nothing to do with sacred groves: shield-making, milk pails, iron smelting, bee-keeping, cattle pasture, dyeing, weaving, a physician's income from other people's wounds, and the cold earth over a corpse.

What the stones say

Almost nothing, and always the same thing.

Ogham inscriptions are overwhelmingly personal names in the genitive, joined by a small set of formula words: MAQI, son of; MUCOI, of the kindred of; ANM, name of. MAQI MUCOI alone occurs around eighty times.

That makes them poor literature and superb linguistics. Because Primitive Irish had not yet undergone the collapse that produced Old Irish — the loss of internal vowels, the loss of final syllables, the rise of initial mutations — these stones preserve Indo-European case endings that are gone from every later Irish text. An Ogham stone is a fossil of a language nobody has spoken for fourteen hundred years.

They are also property. A stone naming a man and his kindred, planted on a boundary, is a genealogical argument about who owns the field.

Divination

There is no evidence that druids used Ogham to tell the future. None: not archaeological, not textual, not in the law tracts.

The script is a writing system, its surviving use is memorial and territorial, its medieval afterlife is grammatical and cryptographic, and the earliest sources describing Irish divination do not mention it. Modern Ogham divination was assembled in the twentieth century on the foundation Graves laid, in conscious imitation of rune casting, which is itself a twentieth-century practice.

That does not make it worthless, and this site does not pretend otherwise about tarot either. It does mean that anyone claiming to read Ogham the way the druids did is describing something invented within living memory.

Frequently asked questions

An alphabet invented to write Primitive Irish, cut into standing stones in Ireland from roughly the fourth to the seventh century. Letters are made by cutting one to five strokes in one of four positions relative to a stemline, which on a monument is the natural edge of the stone. Four positions by five counts gives twenty letters.

No. It has no relationship to the Elder Futhark or its descendants: different language family, different design principle, different origin, and not one shared letter. What it shares is a job and a look — an angular script cut into hard material by people whose neighbours wrote Latin, used for memorials and claims of ownership.

No, and this is the most persistent myth about it. Only about eight of the twenty letter names have secure botanical etymologies. The rest name an ingot of metal, sulphur, a field, a fork, redness, terror, killing, soil and other things entirely. The tree scheme was imposed by medieval scribes who noticed the letters were called feda, woods, and worked to make all of them trees.

From Robert Graves's The White Goddess, published in 1948. Graves grafted an invented thirteen-month calendar onto the alphabet, and almost every tree-and-month correspondence in circulation today traces to that book. It is poetic imagination rather than scholarship, and Graves did not claim otherwise.

The four families of five letters the alphabet divides into, each defined by where its strokes sit relative to the stemline: right, left, diagonally across, or as notches square on the line. They are named for their first letter — Aicme Beithe, Aicme hÚatha, Aicme Muine, Aicme Ailme.

Three independent lists of two-word kennings for each letter, ascribed to Morann mac Moín, Mac ind Óc and Cú Chulainn. They are Ogham's closest equivalent to a rune poem, and because the three were composed separately, agreement between them is real evidence. They are the main reason we know most letters were never named for trees.

Personal names in the genitive, joined by a few formula words: MAQI, son of; MUCOI, of the kindred of; ANM, name of. MAQI MUCOI alone occurs around eighty times. They are memorials and territorial claims, and their value is linguistic: they preserve Indo-European case endings that vanished before Old Irish was written.

Extra letters engineered in the manuscript period for sounds the original twenty could not write, including Latin /p/, which Irish had lost entirely. Their shapes are composite loops and lattices rather than counted strokes, and apart from Ébad in the formula KOI they barely appear on stone.

There is no evidence of it — not archaeological, not textual, not in the law tracts. The script's surviving use is memorial and territorial, its medieval afterlife grammatical and cryptographic. Modern Ogham divination was assembled in the twentieth century on Graves's foundation, in conscious imitation of rune casting, which is itself a twentieth-century practice.

Bottom to top along the left-hand edge, continuing across the top and down the right. The Unicode row on this page is laid out left to right for convenience, which is how manuscripts write it but not how the stones do.

Because you cannot count six parallel strokes at a glance. The system encodes a letter as a position plus a count, and human perception caps reliable subitising at about five. Four positions times five counts closes the set at twenty, and everything after that had to be built from composite shapes instead.

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