Robert de Boron (also spelled in the manuscripts "Roberz", "Borron", "Bouron", "Beron") was a French poet of the late 12th and early 13th centuries, notable as the reputed author of the poems and Merlin. Although little is known of him apart from the poems he allegedly wrote, his works and subsequent prose redactions of them had a strong influence on later incarnations of the Arthurian legend and its prose cycles, particularly through their Christian back story for the Holy Grail. Life Robert de Boron wrote Joseph d'Arimathe for a lord named Gautier de Montbéliard and he took on the name Boron from a village near Montbéliard in eastern France. What is known of his life comes from brief mentions in his own work. At one point in Joseph, he applies to himself the title of meisters (medieval French for 'master', indicating being a clerk); later he uses the title messires (medieval French for 'sir', indicating his knighthood). At the end of the same text, he mentions being in the service of Gautier of "Mont Belyal", whom Pierre Le Gentil identifies with one Gautier de Montbéliard (the Lord of Montfaucon), who in 1202 left for the Fourth Crusade, and died in the Holy Land in 1212. Le Gentil argues that the mention of Avalon shows that Robert wrote Joseph after 1191, when the monks at Glastonbury claimed to have discovered the coffins of King Arthur and Guinevere. His family is unknown, though the second author of the Prose Tristan claimed to be Robert's nephew, calling himself "Helie de Boron" (this is taken more as an attempt to drop a famous name than a genuine accreditation, however). Although Le Gentil describes him as a "poet endowed with boldness and piety but with mediocre talent", his work was immensely successful and influential. Notably, his version of the myth of the Holy Grail, originally an element of Chrétien de Troyes's unfinished Perceval, was adopted by almost all later writers of the Matter of Britain. Works Robert de Boron is considered the author of two surviving poems in octosyllabic verse, the Grail story (also known as the Metrical Joseph and the Estoire dou Graal) and Merlin; the latter survives only in fragments and in later version rendered in prose (possibly too by Robert himself). Both were translated into Middle English by Henry Lovelich in the mid-15th century. The two are thought to have formed either