Game of Thrones, with its campy portrayal of regal titles and announcements, kind of drives this point home. European aristocracy, especially those derived from germanic and other barbarian cultures, held titles like collectibles. Lordships accrued rather than expanded. The could be dispersed and often were.
If you watch Queen Elizebeth coronation, the list of titles would shame Daenerys Targaryen. It's quite surreal. Queen of Jamaica, Empress of India, Defender of the faith...
Even the 20th century version was not unrelated to real politics, but as you go back, this reflected real political power and machinations. Every title had different rules, different arbiters, and disputes led to actual wars.