> "Do·dechuid éim," ol in ben, "a Cúailngi[u] íarna dáir [táin?]
> [tair] don D[o/u]nn C[h]úailng[i/e]."
In a1), the spelling of the last two words was "dunn chuailngi/e" which is a good indication, to my eyes, that the first word was still fully inflected like the adjective "donn",
i.e. it showed raising in the dative and caused lenition on the following word. This is what we would expect for OIr. anyway, so I think we can take it into our constructed