The chanson de geste, /ʃɑːnˈsɔːn də ˈʒɛst/ Old French for "song of heroic deeds" (from gesta: Latin: "deeds, actions accomplished"), is a medieval narrative, a type of epic poem that appears at the dawn of French literature. The earliest known poems of this genre date from the late eleventh and early twelfth centuries, before the emergence of the lyric poetry of the trouvères (troubadours) and the earliest verse romances. They reached their apogee in the period 1150–1250.
Composed in verse, these narrative poems of moderate length (averaging 4000 lines) were originally sung, or (later) recited, by minstrels or jongleurs. More than one hundred chansons de geste have survived in around three hundred manuscripts that date from the 12th to the 15th century.
Since the 19th century, much critical debate has centered on the origins of the chansons de geste, and particularly on explaining the length of time between the composition of the chansons and the actual historical events which they reference. The historical events the chansons allude to occur in the eighth through tenth centuries, yet the earliest chansons we have were probably composed at the end of the eleventh century: only three chansons de geste have a composition that incontestably dates from before 1150: the Chanson de Guillaume, The Song of Roland and Gormont et Isembart: the first half of the Chanson de Guillaume may date from as early as the eleventh century;Gormont et Isembart may date from as early as 1068, according to one expert; and The Song of Roland probably dates from after 1086 to c.1100.