Screw the sacramental wine; I'll have a Guinness to wash away the damage of life.
St. Patrick's story is well speculated, but the truth has been surrendered to legend, which is probably for the best. Truth never makes good television. Legend is far more interesting.
He is, of course, credited for bringing Christianity to Ireland, as represented by the expelling of a plague of snakes (pagans) from the young nation. Of course, the Christians' methods of persuasion were not subtle, and the trail of dead was enormous as they marched into northern Europe.
So, please do have that Guinness (or five) tonight, but raise one of those pints in honor of the Druids of Eire. We need a few million more of ye, to balance things a bit in this world. Cheers.