His fate is unknown, either losing his lands from an argument with Louis VII or dying on crusade and his lands going to his daughter Elizabeth's husband, Peter.
Renaud was the son of Miles (Milo) de Courtenay, Seigneur of Courtenay and his wife Ermengard de Nevers.
[1] He succeeded his father as Seigneur of Courtenay and fought in the Second Crusade with King Louis VII of France.
[2] According to Suger, Renaud argued with King Louis VII, who seized Renaud's possessions and gave them to his youngest brother, Pierre (Peter) of France, who thenceforth became known as Peter I of Courtenay.
[3] Nicholas Vincent states that Renaud in all probability died on crusade and that his daughter Elizabeth married Peter who inherited Courtenay lands.