Under protocols established by King George V in 1917, the children and grandchildren of a sovereign have the automatic right to the title HRH and prince or princess.Prince William and Princess Kate’s children were given royal titles from birth because royal protocol dictates that “the eldest son of the eldest son of the Prince of Wales” can be given HRH status.
At this point, you’re probably wondering why Princess Charlotte was given a title considering she’s not the eldest, nor is she William and Kate’s son. That’s because in 2013, Queen Elizabeth II issued a letters patent that removed the first-child-only decree. The same rule applies for little Prince Louis.
