I only do this because my DNA test says I'm mostly Irish. I can't find a single person in the family tree from Ireland. I think it's my Nordic ancestors who settled in Ireland back in the day and found the Irish ladies most toothsome.
Here's a nice picture for the post display. I suppose a Leprechaun, shamrock, or some other Irish St. Pat's pic should be used, but I'll show you something much cooler than a cartoon character. An ancient Irish castle gives me pause as I think of the history weighing so wondrously on us all.