In the 16th century, the manuscript was in the possession of the Mac Egans of Duniry, hence the older title Leabhar Mór Dúna Doighre.
Capitals are decorated in a simple style, with some letters having been interwoven with zoomorphic patterns and coloured in red, vermilion, yellow and blue.
Exceptions to the predominantly religious contents are Sanas Cormaic ('Cormac's Glossary') and a history of Philip of Macedon and Alexander the Great.
[9] The numerous notes which Murchadh Ó Cuindlis jotted into the margins afford us a unique glimpse of the circumstances of the writing process.
These range from everyday details like a cat straying about or a robin singing in a beautiful voice to a nearby pillage in Lorrha by a certain Murchad Ua Madagáin.