I think that the version of "Le roi Renaud" by Bensusan is a really pity & doesn't respect the spirit of this beautiful traditional song. The best versions I know are on the album : "Belgique : Ballades, danses et chansons de Flandre et de Wallonie" Ed. by Ocora - (OCD 580061 ??)
(2 versions on this album, an old and a newer one)
In Henri Davenson's songs book, it is said the same things Malcolm Douglas explained, about the connections between "Roi Renaud" & "Elveskud".