What is eponymic title?
A title based upon the name of an individual person could be said to be an "eponymic title". With some help from Wikipedia: Specifically, an eponym is a person, whether real or fictitious, after whom a particular place, tribe, era, discovery, or other item is named or thought to be named. Someone eponymous is someone that gives their name to something, i.e. Julian, the eponymous owner of the famous restaurant Julian's Castle. Something eponymous is named after a particular person, i.e. Julian's eponymous restaurant. In contemporary English, the term eponymous is often used to mean self-titled even though it is an incorrect usage of the word. An aitiology is a "reverse eponym" in the sense that a legendary character is invented in order to explain a term.