When the public refers to any of the royals they don’t just use their names but also their titles like Prince Harry and Meghan Markle, Duke and Duchess of Sussex. We don’t really think about it, we just do it, but do the royals actually get their titles?
After Prince Harry and William got married they received their official royal titles
Prince William got married to Kate Middleton back in 2011. Kate was not of royal blood but when they got married they both received royal titles. Before the marriage Prince William was referred to as Prince William but after he married her he got the title of Prince William, Duke of Cambridge and in turn Kate became the Duchess of Cambridge. Of course the same thing happened with Harry and Meghan, he came the Duke of Sussex and she became the Duchess of Sussex.
Another way to do it is to just be born with it
Some titles are much simpler to explain than others, for example, Queen Elizabeth’s title of queen comes from being in the direct descending family line. After Elizabeth’s uncle renounced the throne her father took over which made her the next line to rule. Her son, Charles became a prince from the moment he was born just because he’s the Queen’s son. So these titles were pretty simple but when it comes to other titles like “Duke of Edinburgh” or “Duke of Suessex” it doesn’t just depend on the family line.
The queen herself bestows royal titles based on royal importance and the lad hey own
To make things simple the titles of “duchess” and “duke” are given out based on importance. Duke and Duchess are on the highest tier when it comes to titles so they’re usually given to someone like a prince. She gave those to her grandsons but the latter part of the title like “Of Cambridge” or “of Sussex” also depends on the queen. Being the duke of something basically puts you as the sovereign ruler of that land, Sussex is a large county in Southeast England which makes Harry and Meghan sovereign rulers of that land. An exception is Prince Charles who is the Duke of Cornwall, that titles is always given the monarch’s eldest surviving son and heir.
The revenue made from the land they rule over play a large role in the royals’ income. Most of the money Charles makes comes from the revenue surplus in Cornwall. All in all royals get titles based on their family line, their royal importance and the ruling monarch.