How to read Ogham
Ogham is read from the base of the stone upward along the edge. Letters are groups of one to five strokes to the right, left, across, or as notches on the stem. Horizontal left-to-right is a modern display habit.
Count the strokes. Follow the edge. Do not invent letters the carvers never used.
The stem line
Every Ogham letter hangs off a stem called the druim — ridge or back. On a standing stone the stem is not drawn. It is the arris, the sharp edge. The carver cuts strokes into that corner.
On a screen we draw the stem. Horizontal Ogham is a later book and web habit. The stones are vertical.
Reading direction
On a standing stone, start at the base and read up. If the text continues over the top, keep going down the far edge. In horizontal digital Ogham, read left to right.
For a vertical tattoo on the forearm, the historical match is wrist-to-elbow, matching bottom-to-top on a stone.
The four aicmí
| Aicme | Where the strokes sit | Letters |
|---|---|---|
| Beith | To the right of the stem | B L F S N |
| hÚatha | To the left of the stem | H D T C Q |
| Muine | Across the stem | M G NG Z R |
| Ailme | Notches on the stem | A O U E I |
Count the strokes. One stroke is the first letter of that family; five strokes is the fifth.
Forfeda
Five extra letters appear in medieval manuscripts for diphthongs the stone alphabet did not need. Peith (P) is later still. They are rare on monuments. Treat them as optional, and say so if you use them on skin or gold.
Frequently asked questions
Which way do you read Ogham?
Bottom to top on a stone. Left to right when the stem is drawn horizontally.
What is an aicme?
A family of five letters that share a stroke direction.