In 1178 Raoul and his elder brother John subscribed to a charter of the eldest brother, Conon, then count, donating property to Notre-Dame d'Ourscamp.
When Alberic de Trois-Fontaines wrote his chronicle, he could refer to count Raoul of Soissons qui adhuc vivit (who still lives).
According to Rigord, he took the Cross alongside Henry II of England and Philip II of France at a ceremony between Trie and Gisors on 13 Jan 1188 and joined the Third Crusade.
She confirmed donations to Notre-Dame d'Ourscamp [fr] and Tremblay-en-France with him, and died between January 1205 and March 1210.
Raoul was briefly married to Yolande, daughter of Geoffrey IV of Joinville, before taking as his third wife Ada d'Avesnes, widow of Henry, Count of Grandpré.