Valerius Maximus (vəlērˈēəs măkˈsĭməs) [key], c.20 B.C.–c.A.D. 50, Roman author. Little is known of his life. His Factorum ac dictorum memorabilium libri IX [nine books of memorable deeds and sayings] was written c.A.D. 30 and is a miscellany of anecdotes about a variety of subjects. The work was widely popular, especially as a source for writers and orators.