He was the second son of Raoul le Bon, Count of Soissons, and became the Sire de Coeuvres in 1232.
In 1239, Raoul joined his lord Peter I, Duke of Brittany, on the crusade of King Theobald I of Navarre.
Raoul composed the jeu parti "Sir, loez moi a loisir" with Theobald of Navarre.
Raoul was also the judge of a jeu parti between Henry III of Brabant and Gillebert de Berneville.
Though Thierri's musical settings are unlike those of Raoul, an insufficient number of melodies survives to "permit firm conclusions regarding the existence of two different artistic personalities".