Part of nomenclature, the study of proper names is called onomastics, a field which touches on linguistics, history, anthropology, psychology, sociology, philology, and much more.
There are several branches to onomastics:
- Anthroponomastics is the study of personal names.
- Literary onomastics researches the names in works of literature and other fiction.
- Toponomastics is the study of place names.