EMBARGOED TO 0001 WEDNESDAY DECEMBER 27 File photo dated 12/10/1993 of the Princess of Wales smiles as she shelters under an umbrella during a visit to the Edward's Trust in Edgbaston, Birmingham. Diana, Princess of Wales showed "obvious ignorance of, or disregard for, constitutional niceties" in relation to Northern Ireland, according to a note from the Irish ambassador in 1993. The late princess had referred to Northern Ireland as part of Ireland in an interaction which was noted ahead of a historic visit by then-Irish president Mary Robinson to Buckingham Palace. Issue date: Wednesday December 27, 2023.