Singular
NOMINATIVE
Ard-Fheis
▪an Ard-Fheis
GENITIVE
Ard-Fheise
▪na hArd-Fheise
Plural
NOMINATIVE
Ard-Fheiseanna
▪na hArd-Fheiseanna
GENITIVE
Ard-Fheiseanna
▪na nArd-Fheiseanna