One of the earliest trouvères, and among the most famous poets of the period. For a time at the court of Marie de Champagne, he may have gone on one or more Crusades. Sixty-nine of his poems, for which fifty-seven melodies survive, were widely disseminated in MS. Some of his melodies show the influence of Gregorian chant. One of his songs, wrongly attributed to Thibaut of Navarre, is praised by Dante in De vulgari eloquentia.