There seems to be little or no consistency as to whether he had one wife or two, who they were, and what exactly happened to the first one.
The English Wikipedia applies Occam's Razor liberally and perhaps excessively, paring him down to one wife with two names. (Moreover, all versions have been stripped to the bare bones, removing the gossip and scandal that is preserved in the older version(s) pasted into the "About" sections.)
The French, Italian and German Wikipedias still give him two wives: Eremburga, who died c. 1011, and Aubree de Canville (they aren't consistent as to which one came first).
This French source http://ivry-lesvieillespierres.fr/?q=node/53 http://ivry-lesvieillespierres.fr/?q=node/54 claims that Aubree (last name not specified) was the mother of Raoul's first four children, and repeats the gossip that he had her killed to keep control of the fortress she ordered built.
This one http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=jwebe... (which uses English-language sources only) claims that "Ernrburge de Caux" was his first wife and "Albreda" (no last name specified) was his second.
Medlands http://fmg.ac/Projects/MedLands/NORMAN%20NOBILITY.htm#EmmaIvryMOsbe... cites him as Count of Bayeux and studies the wife/wives question at some length.
There is an interesting discussion and some new angles here: https://groups.yahoo.com/neo/groups/crispincousins/conversations/me...
As to the name, there is a Carville-Pot-de-Fer near the Norman coast, there are two Collevilles (Colleville and Colleville-sur-Mer), and a whole Pays de Caux where Norman French is still spoken. And of course there is Canville-les-Deux-Églises, the reputed locus of the de Camville family....