The Constitution Unit at UCL explains: “Charles was created Prince of Wales in 1958 when he was aged 10, with an investiture at Caernarvon Castle in 1969.
“As an adult, Prince William might expect to become Prince of Wales soon after his father’s accession; but that will be a matter for the new King to decide because, strictly, the title is not heritable.”
Although the Prince of Wales title has a long history in the Royal Family, one of Charles’ other titles is significant for the Royal Family as well.
From the moment his mother ascended the throne in 1952 as Queen, Prince Charles was considered heir apparent.
