"Cacheville" derives from a bad French translation of Guillaume de Jumieges - the actual text explicitly states that she came from "Canville" in the Pays de Caux and was known both as Albereda and Eremburga (also that she was very beautiful): .
"Accepit autem mulierem quamdam, vocabulo Erembergam vel Alberedam speciosam valde, natam in quadam villa Calcivii territorii, quae dicitur Canvilla." ("He married a wife, called Eremberga or Albereda, (very beautiful?), born in a place in the Chalk territory (Pays de Caux) which is called Canville.")
This clearly ties her to the Camvilles (and see discussions about where *they* originally came from, e.g. https://www.geni.com/discussions/145837
She may be the same person as Albérède de Bayeux
It will be necessary to convince both of them that Cawley got it wrong in assuming Raoul d'Ivry had two wives. (Funny how he deplores rash assumptions in others, but when *he* makes one it's all good!)
Orderic Vitalis only knew of one wife, and said her name was Albereda - then went on to repeat some juicy gossip about how she had the fortress of Ivry built, executed the architect so he couldn't build another one, and tried to oust her husband, who turned on her and had her killed.
Guillaume de Jumieges also only knew of one wife, but wasn't certain whether her name was Albereda or Eremburga, so he put both names down. He also spelled out that she was from "Canville" in the Pays de Caux - and he didn't repeat any of Orderic's gossip.
Tagging Pam Wilson (on hiatus) and Private User