Sundry manuscripts of the yet more extensive compilation which begins with the Grand Saint Graal also refer to Map as having composed the cycle in conjunction with Robert de Borron, to whom, as a rule, the Grand Saint Graal and Merlin are exclusively assigned.
Of the Perceval-Grail romances the oldest from the point of view of manuscript preservation is the Perceval or Conte del Graal of Chretien de Troyes.
It produced in England the Roman du Saint Graal and the Roman de Merlin, both from the pen of Robert de Borron; the Roman de Lancelot; the Roman de Tristan, which is attributed to a fictitious Lucas de Gast.
There exists a mid14th-century Historia do Santo Graal, and an unprinted Josep' ab Aramadia, while, though the MS. is lost, we have abundant evidence of the existence of a primitive Portuguese prose redaction of Amadis de Gaula anterior to the present Spanish text.
The taste for romances of chivalry continued throughout the 5th century, but of all that were produced the only one that has come down to us is the Estorea do Imperador Vespasiano, an introduction to the Graal Cycle, based on the apocryphal gospel of Nicodemus.