"Girautz de Borneill" (as written at top) in a 13th-century chansonnier.
Giraut de Bornelh (c. 1138 – 1215), whose first name is also spelled Guiraut and whose toponym as de Borneil or de Borneyll, was a troubadour connected to the castle of the viscount of Limoges. He is credited with the formalisation, if not the invention, of the "light" style, or trobar leu.
About ninety of Giraut's poems and four of his melodies survive; these were held in high esteem in the 13th century: Petrarch called him "master of the troubadours", while Dante, who preferred Arnaut Daniel, mentions that many considered him superior. Notable pieces include: