Chris Gwinn wrote:

>>Angus Og = Aonghus Óg
>
>OIr. Oengus / Mac ind Oc

To be finnicky about it, I suppose the OIr. would have been Óengus as well
as (unattested) Mac ind Oac, cf. O'Rahilly in Early Irish History and
Mythology who suggests an original *Macon + "young", with *Macon <
*makkwonos almost = Welsh Mabon, Gaul. Maponos < *makwonos, later reshaped
after the article but without changing "young" into a "proper" genitive
accordingly, cf. O'Rahilly's Middle Irish rhyming evidence for neutral -c
in óc.

Jürgen
===================
Dr. Jürgen Uhlich
School of Irish
Trinity College
Dublin 2
Ireland

Tel.: 00353-1-6082600
Fax: 00353-1-6772694
===================