> > I should think that the spelling should ideally be Aithirne, the first
element being the prefix aith- (see eDIL under "aith").
> Is it? It could also be a derivative of the word for "father", i.e.
corresponding to a formation like Lat. paternius.
> Aithirne would be a normalised spelling, in any case. In Old Irish
practice, Athirne is a legitimate spelling.
Cf. the ancient, Latinized gens name Ateronius/Ateronia attested in Novara,
Italy (Cisalpine Gaul), which could indicate descent from an ancestor named
- Chris Gwinn