Hayden (Deborah): Cryptography and the alphabet in the Book of Ádhamh Ó Cianáin.
In Grammatica, gramadach and gramadeg (2016), pp. 35–64.
Examines two items in the second half of ‘The Ó Cianáin Miscellany’ (NLI G 2-3): 1. a marginal quatrain in cypher, beg. Dobithir dael dath abra; 2. a list of numerical values for the letters of the alphabet. In Appendix: edition of a poem on the numerical values of the letters, beg. A áos cumtha éstigh. From BL Additional 30512; transcription, restored text, English transl., textual notes.


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