Britain's heir to the throne, William, and his wife, Catherine, on Tuesday made their first visit to Wales since becoming the new Prince and Princess of Wales.
William automatically inherited the title on the death of his grandmother, Queen Elizabeth II, when his father -- the previous prince of Wales -- became king.
King Charles III spent time learning Welsh at university before he was crowned by his mother in a televised ceremony at Caernarfon Castle in July 1969 when he was 20.
During the elaborate investiture ceremony, the queen placed a coronet on Charles's head and helped arrange robes around his shoulders.
He pledged allegiance to his mother with the words: "I, Charles, Prince of Wales, do become your liege man of life and limb."