Clarence House has been the official residence of the heir apparent of who?
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.
Norwegian royal family The Norwegian Royal Family is the family of the Norwegian monarch. In Norway there is a distinction between the Royal House and the Royal Family. The Royal House includes only the monarch and their spouse, the heir apparent and their spouse, and the heir apparent's eldest child. The remaining Royal Family includes also all other children, grandchildren and siblings of the monarch, along with their spouses and widows or widowers.