March 17 is celebrated throughout the United States and Ireland as St. Patrick's Day. On St. Paddy's Day, as it is familiarly known, we wear green, eschew orange and drink gallons of green beer. (Yuck!) We hold parades, dye entire rivers green, and generally behave in a very un-saintly fashion. [ad#Google Adsense-1] St. Patrick: A Brief History (with a little guesswork thrown in) St. Patrick himself is a figure shrouded in some mystery. He probably lived during the 5th century, and was a Roman …