Since when has the husband of Diana, Princess of Wales been heir apparent?
Charles, Prince of Wales Charles, Prince of Wales (Charles Philip Arthur George; born 14 November 1948) is the eldest child and heir apparent of Queen Elizabeth II. Known alternatively in Cornwall as Duke of Cornwall and in Scotland as Duke of Rothesay, he is the longest-serving heir apparent in British history, having held the position since 1952. He is also the oldest person to be next in line to the throne since Sophia of Hanover (the heir presumptive to Queen Anne), who died in 1714 at the age of 83.
Lady Helen Taylor Lady Helen Marina Lucy Taylor (née Windsor; born 28 April 1964) is a daughter of Prince Edward, Duke of Kent and his wife Katharine, Duchess of Kent, and a great-granddaughter of King George V. She is a first cousin once removed of Elizabeth II. She is currently 40th in line of succession to the British Throne.