Originating From The Irish Language, The Boy’s Name Ahern Means “horse-lord.” This Name Derives From The Surname Ó HEachthigheirn, In Which Each Means “steed” And thighearna Means "lord." Aherne Soon Became The Popular Anglicized Variation Of The Name. Although Aherne Is Typically Used As A Surname In Ireland, It Can Also Be A Lovely First Name To Honor Baby’s Irish Heritage.