OriginProbably from English pan, which see for details.
Formspanna(genitive, singular) · pannaí(nominative, plural) · panna(indefinite, nominative, singular) · pannaí(indefinite, nominative, plural) · a phanna(indefinite, singular, vocative) · a phannaí(indefinite, plural, vocative) · panna(genitive, indefinite, singular) · pannaí(genitive, indefinite, plural) · panna(dative, indefinite, singular) · pannaí(dative, indefinite, plural) · an panna(definite, nominative, singular) · na pannaí(definite, nominative, plural) · an phanna(definite, genitive, singular) · na bpannaí(definite, genitive, plural) · leis an bpanna(dative, definite, singular) · don phanna(dative, definite, singular) · leis na pannaí(dative, definite, plural) · panna(error-unrecognized-form) · phanna(error-unrecognized-form) · bpanna(error-unrecognized-form)
Source: Wiktionary — CC BY-SA 4.0