Buckingham Palace confirmed soon after the Queen’s passing that her son and heir had chosen to be known by his Christian name during his reign as king.
The death of Queen Elizabeth II has brought about the close of the second Elizabethan age and ushered in the rule of King Charles III.
His title was revealed by Prime Minister Liz Truss during her address from Downing Street in the aftermath of the Queen's death, and then confirmed by the palace on Thursday (September 8).