The Irish have always been an important part of San Francisco. An 1852 census showed that almost nine percent of the city of 36,000 hailed from Ireland; by 1900, nearly a quarter of the population had come here from the Emerald Isle. Today a walk through any part of the city will showcase influential Irish street names such as Downey, Fell, Kearney, O'Farrell, O'Shaughnessy, and McAllister. Churches such as St. Brigid's and St. Patrick's still are...