I think you'll find that the Zoological Gardens chorus goes "Thunder and Lightning is no lark..." This is not a meteorological observation, it's about knocking on doors and running away (which of course is no fun in the dark as you can't see the reaction).

And the song that's called the "Risin' of the Moon", Gutsy, is ... well, how can I explain this? It's The Rising of the Moon. Same tune as the Wearing of the Green, different words.

But as for who St Patty could possibly be - ah no, you got me there. Begorrah bejabbers, no idea!

Marje