you call it oxforders
An Oxonian.
People who attend the University of Oxford are normally posh as they commonly have a history of rich family. People who live in Oxford are anything but posh
The word for an "Oxford bigwig" would likely be don.
Oxonian
Oxford
Maltese
Californians
I suggest you call Oxford Insurance customer service and ask them for a list.
Oxford street
People who live in Germany are called Germans
I imagine lots of people do it around the UK that live near towns, for instance I live near enough birmingham for people to call it town, and my cousins who live near Manchester and call that town too.
Yes many Australians that have the qualifications and the money go to Oxford.
All three phrasings are correct, but they may have slight differences in use and connotation. "What do you call" is more common for asking about the name or title of something, while "How do you call" can be used in a similar way but might suggest a method or process of naming. Both can be suitable when asking about the name of people in France.