Prose Tristan

Roman de Tristan
Tristan and Iseult drinking the love potion while playing chess on a ship in a 13th-century manuscript copied in France around 1470 as part of the Compilation arthurienne de Micheau Gonnot (BnF, manuscrit Français 112)

AuthorUnknown (self-attributed to "Luce de Gat" and "Hélie de Boron")
CountryKingdom of France
LanguageOld French
DisciplineChivalric romance
PublishedEstimated 1215—1240 (shorter version)

The Prose Tristan (French: [Roman de] Tristan en prose), also known as Tristan de Léonois, is a 13th-century Old French adaptation of the Tristan and Iseult story into a lengthy prose romance. It was the first to tie the subject entirely into the arc of the Arthurian legend, making the hero Tristan a member of the Round Table. It was also the first major Arthurian prose cycle commenced after the widely popular Lancelot-Grail (Vulgate Cycle), which influenced especially the later portions of the Prose Tristan. It exists in multiple distinct variants, notably the "short" and the "long" versions.