sorry I wasn't meaning to tell you what you already knew as regards Cailleach and veil-taking (I just didn't know if you knew it from the above discussion with megli where you were asking about a status for women with veil...I misread you)
I really do not have too much on status of women in society. There has been a lot of research on that and many publications but my reference list is not to hand.
I can suggest though, if you have not already looked into them:
A Guide to Early Irish Law by Prof Fergus Kelly, as he goes through the status ranks of persons in society based on the legal texts and I am sure in the bibliography you will find further references specific to women.
Likewise D.A.Binchy. I know he has articles on "Family membership of women" and "legal capacity of women" in Studies in Early Irish Law (Dublin, 1936).
Donnchadh O Corráin may also have published in this area. I don't know.
Source: Marriage in Ireland, ed. A. Cosgrove, Dublin 1985 5-24. (see O Corráin's article on marriage. He mentions a reference to the upper castes of society marrying only virgins...maybe there was another veil of status to indicate chastity in this case? (pure speculation on my part!)
Ó Corráin, D. ‘Medieval Irish Law’, Field Day Anthology of Irish Writing iv-v (Cork, 2002).
Swartz, D. Dilts, ‘The Legal Status of Women in Early and Medieval Ireland and Wales in Comparison with Western European and Mediterranean Societies: Environmental and Social Correlations’, PHCC 13 (1993) 107-18.
You could check out Prof Patricia Kelly in UCD (ireland) as she used coordinate a course on women in women in mythology and law and the Cailleach Bheara.
This one's a reading list for welsh studies that I found on the net, you might find something for comparative lore & legal status in there
Happy hunting! let us know what you churn up.
ps. re: dictionary...I usually search for things without the glide vowels and check various consonantal endings (esp dental and guttural stops and fricatives) if I don't find them straight away. if only they'd database the dictionary it would be easier to search!