What do you call a group of stories told about a particular person or place?
A Legend is a genre of folklore that consists of a narrative featuring human actions perceived or believed both by teller and listeners to have taken place within human history. Narratives in this genre may demonstrate human values, and possess certain qualities that give the tale verisimilitude. Legend, for its active and passive participants may include miracles.
Legends may be transformed over time, in order to keep them fresh and vital. Many legends operate within the realm of uncertainty, never being entirely believed by the participants, but also never being resolutely doubted. Legends are sometimes distinguished from myths in that they concern human beings as the main characters rather than gods, and sometimes in that they have some sort of historical basis whereas myths generally do not.
Legend is a loanword from Old French that entered English usage circa 1340. The Old French noun 'legende' derives from the Medieval Latin 'legenda'. In its early English-language usage, the word indicated a narrative of an event. The word legendary was originally a noun (introduced in the 1510s) meaning a collection or corpus of legends. This word changed to legendry, and legendary became the adjectival form.