Outside parties can also give someone a name but the individual must still personally see it as their name for it to bind. It is not uncommon in fae culture for individuals to name each other and have that name be accepted. Many monsters will of had a mixture of chosen and given true names over the course of their lives.
Some individuals will have decoy names or nicknames they can be safely called by as well as a title- or they may even avoid having a real name altogether and only go by vague terms describing their appearance (such as “faun”).
Titles are more ingrained into fae culture than they are among abnormals. Many titles aren’t unique and can be changed at any time. They can be as simple or pretentious as the person desires.
As an example, Waite introduces himself as as either “An ambient man” or “The Hound of Darlington” without a decoy name and lets whoever he is speaking to call him whatever they like.