Talk:Donn Óge Mag Oireachtaigh

Óge Mag Oireachtaigh or Oge Mageraghty or Óg Mag Oireachtaigh?
The subject's name appears as: Donn Óge Mag Oireachtaigh in the title and the lede, but as: Donn Oge Mageraghty in the section "Annalistic references" further down. Should not the article explain to the unsuspecting reader why these are so different? I suppose the one in the title is the Irish and the one from the annals is the English form of the name of the biographical subject. Is this so?

The somewhat similar article Niall Oge O'Neill gives "Niall Óg Ó Néill" as its Irish form. Why does the Irish form here use "Óge" and there "Óg"? I consulted an Irish dictionary and find óg young. Again, why have the title and the lede "Óge" and not "Óg"? I thought it might be because it is the comparative form, but that, according to Irish declension, would be óige.

I ask because I nominated the article "Donough MacCarty, 1st Earl of Clancarty" for A-Class review (see WP:WikiProject Military history/Assessment/Donough MacCarty, 1st Earl of Clancarty). That article mentions Donough's father Charles MacCarthy, 1st Viscount Muskerry who is also called "Cormac Oge" (without "fada") in the sources. I believe this "Oge" means "the younger". One of the reviewers wants a citation for this. I cited the dictionary, but he says it is not enough as the dictionary says óg, not Oge. Is Oge directly Irish or an anglicisation of an Irish word? If Irish, is it the base form or the comparative? With many thanks, Johannes Schade (talk) 17:02, 3 March 2021 (UTC)