The norse language in Normandy have certainly a lot of cummon patterns with Anglo-norse.
The arguments are that nouns that we found in place names are from celtic origin (njállhólmr -> Néhou), and anglo-norse origin (*bretakollvilla > Britecolvilla > Brectouville).
My own name (I won't cite, to preserve my datas, sorry) is typical from Normandy. Is it norse ? Not directly, it's germanic. But which link between Normandy and Germany ? No one. And where can we find this name in other european areas ? In Lancashire. So we have a link Germany-Lancashire-Normandy. Typically a viking way, isn't it ?
My name is from germanic origin, but I guess, my parents were allready norsemen at this time (maybe some slaves ?).
That's why I think Anglo-norse and the norse language in Normandy are quite the same.
So, norse in Normandy maybe had some final /-u/ which fell in old icelandic, and certainly had final or preconsonantic /w/, as in anglo norse
skiw for
ský.
One argument in this way : the norman french word "mauve" [mauv] (gull). That's
mǫ́ʀ/
máʀ in old norse. So, where the /v/ comes from ? Don't forget that the PGerm form is *maihwaz. And here have we the /w/. So I guess the form in Norse in Normandy was *
máwʀ, as in anglo-norse.
That's why if you have more informations about anglo-norse, tell me more !