Know the song Rising of the Moon? I have heard some rumors/stories about the backround. Can anyone confirm or deny or add any they know.

I heard that the lyrics were written to an old irish air by a boy of 15 years. Anyone know if this is true or not or who wrote it when?

I also hear the the last verse (Well they fought for poor old Ireland and full bitter was their fate / Oh what glorious pride and sorrow fills the name of Ninety-eight) was added in the 20th century. Does anyone know about this? What/who is Ninety-eight?

Thanks,

Jon