Could anybody help me, please? I need to know the translation of "In Tua Nua", which is the name of a former Irish band I like listening to.

= I dtuath nua "In a new land" Ceart, a chairde?

You could read it as straightforward Old Irish:

in = an = the
tua = rampart, fortification
nua = new

Thus, "The New Rampart" ... ach níl a fhios agam beo an é sin a bhí ar aigne acu, na daoine a chum an t-ainm sin.

Thanks, Dennis. The 'in' was the tipoff, but I still insisted on seeing modern Irish. I would never have gotten 'rampart' out of it - not in my inventory nor in the modern dictionaries. Maidir le cad tuighe ar roghnaigh siad an t-ainm sin, b'fhéidir gur ceann de na cialla eile a bhí ar intinn acu. Níl 'fhios agam cá háit a bhfuair siad é.

I wouldn't put all my money on that explanation, at least without knowing the history of the band. But apparently at least one other now-defunct band was inspired to take its name from Old Irish. I'm thinking of Horselips, which named itself after the warrior Echbél, who has a minor role in Scéla Mucce Meic Dathó. Agus maidir leis an scéilín seo, má tá bréag ann, bíodh. Ní mise a chum ná a cheap é.

I knew one of its members years ago..I believe any resemblance to "An Tua Nua" (the new axe) is co-incidental. If memory serves, it is a Polynesian expression.