Lord help me. but I NEVER heard that expression from my parents - and my Grandparents were long gone before I ever arrived. Maybe they employed it, but I will never know...
Perhaps a figure of speech?
I do know the SF Hibernian Society
https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=hibernian society san francisco
is still alive and well...perhaps Google it for a link and ask them?
I have St. Cecilia classmates (Feeneys and McCarthys) who attend this Society annual gathering on St. Patrick's Day.