Prince William to make historic vow at King's Coronation as he takes on key role
As heir to the throne, Prince William will play a key role in King Charles' coronation, as he will pledge loyalty and allegiance to the monarch. During the ceremony at Westminster Abbey, the Prince of Wales will kneel before his father and vow: "I, William, Prince of Wales, pledge my loyalty to you and faith and truth I will bear unto you, as your liege man of life and limb.