G'day Pat,I live in Sydney and have heard various versions on the radio (usually ... nay, invariably ... the ABC, our national broadcaster, not the commercial reptiles) - and, sadly, not at folk clubs.
The name Why Paddy's Not at Work Today is one with which I am familiar ... I seem to remember it as attached to one Irish version - but that almost goes without saying ... Sorry I can't be more specific but I can confirm the prevalence of that particular name.
Regards,
Bob Bolton