Peru celebrates many days devoted to saints from the Catholic pantheon, but not much fuss is made here over St. Patrick, one of Ireland’s three santos patronales. He is credited with converting the Irish populace to Christianity, a struggle that is symbolized visually as St. Patrick casting down a mass of wriggling snakes (the Irish “heathen” — see above). You won’t find green beer flowing from the taps in Lima pubs as you do in U.S. cities with large Irish-American populations, such as Boston, Albany and Philadelphia. And you certainly won’t find Limeños parading around the downtown Plaza de Armas dressed in green and sporting buttons that read, “Besame. Soy Irelandesa.”   What you will find in Lima are a few…