King Charles III used his address to the nation on Friday evening to confirm that his eldest son, the heir to the throne Prince William, had been made Prince of Wales.
Prince of Wales is a title usually attached to the heir, but it is not automatic. In his address, which the new King also used to pay a touching tribute to his "dear mama" and to affirm his own pledge to serve, he confirmed that Prince William would be Prince of Wales immediately.
That is in addition to taking on the title of Duke of Cornwall to add to his previous title as Duke of Cambridge. His wife, Princess Catherine, will be the Princess of Wales - a title last held by William's mother Diana.