sentences:  This responsibility normally would have fallen to the Archbishop of Washington at the time, Patrick O'Boyle, but he generously allowed his assistant to do so.In 1968, he returned to Washington from New Orleans to deliver the graveside eulogy for Senator Robert F. Kennedy, and in 1994, he offered graveside prayers at the interment of Jacqueline Bouvier Kennedy Onassis in Arlington National Cemetery.During the Fourth Session of Vatican II, specifically on September 29, 1965, Hannan was appointed as the eleventh archbishop of New Orleans, succeeding Archbishop John Cody (later Cardinal), who had been transferred to Chicago.