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All your examples - no doubt why you chose them! - have 'normal' equivalents in English. So the only reason I can think of to use the Gaelic spelling would be to make a point about ancestry and/or place of origin. It would certainly involve several explanations a day, and the name-bearer would get heartily sick of all the repetition. But, heritage counts and so does accuracy; if it were me, I'd consider using Aidan, Rowan etc as fns or otherwise using Aodhán, Ruadhán etc as middle names. 'Should' doesn't really come into it: it isn't a matter of rules, rather of convenience.