Irish Echo But this is one double duty load that Ray Kelly will happily bear when he leads the 2010 New York St. Patrick’s Day Parade as its grand marshal. Kelly was revealed as the parade committee’s choice to head the 249th consecutive parade at a press conference Tuesday at the Irish Consulate offices in Manhattan. “Commissioner Kelly will lead the marchers up Fifth Avenue on Wednesday, March 17th,” the committee said in a statement. “We are truly delighted that Commission