roman fleuve /flœv/ noun

(literally, river novel) a novel written as a series of self-contained narratives telling the story of a family or other social group over successive generations (also called saga novel)

saga¹ /säˈgə/

1. A prose narrative of the deeds of Icelandic or Norwegian heroes in the old literature of Iceland
2. A body of legend about some subject
3. A series of novels dealing with the history of a family (also saga novel)
4. A long, detailed story (informal)

saˈgaman noun

A narrator of Icelandic or Norwegian sagas