If you come to downtown New Bedford tomorrow and happen to see the flag of Portugal flying in front of City Hall, it is because March 15 is recognized in Massachusetts as Peter Francisco Day, commemorating the Hercules of the American Revolution immortalized by the U.S. Post Office in 1975 with an 18-cent commemorative stamp: "Contributors to the Cause ... Peter Francisco, fighter extraordinary." Peter Francisco lived in Virginia since age 5, when he was found abandoned at City Point, now Hopewell, on June 23, 1765. Left there by Moorish pirates, he was kidnapped from his parents' backyard on a...