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.
Duchy of Cornwall The Duchy of Cornwall (Cornish: Duketh Kernow ) is one of two royal duchies in England, the other being the Duchy of Lancaster. The eldest son of the reigning British monarch inherits possession of the duchy and title of Duke of Cornwall at birth or when his parent succeeds to the throne, but may not sell assets for personal benefit and has limited rights and income as a minor. If the monarch has no male children, the rights and responsibilities of the duchy belong to The Crown and there is no duke. The current duke is Charles, Prince of Wales.