[1] His work can be dated with some precision: the poem "En tous tens" is quoted in the Roman de la violette, which was written around 1225.
[1] Guillaume was born into a wealthy bourgeois family of Arras, the son of Philippe le Vinier and Alent.
[1] (The former may have served as a model for the anonymous song "A ce que je vuel comencier" (RS1272), although this assumption has been made purely on the basis of shared poetic form, since no contemporary melody survives for RS1272, which can be viewed, with a later piece of 'nonsense' notation here.)
He composed jeux-partis with Colart le Boutellier, Andrieu Contredit and Adam de Givenchi for certain, and may also have collaborated with Moniot d'Arras, Thomas Herier and the King of Navarre.
[1] The unaccredited Marian song "Vierge pucele roiaus", which is modelled on the Old Occitan piece "Lo clar tems vei brunezir" by Raimon Jordan, may belong to Guillaume.