Cantabrigian

Cantabrigian is an adjective denoting "of, or pertaining to Cambridge", that is, of the University of Cambridge or of the city of Cambridge, England. The term is derived from Cantabrigia, a medieval Latin name for Cambridge invented on the basis of the Anglo-Saxon name Cantebrigge. (The actual Roman name for Cambridge was Duroliponte.)

The term is also used (locally) in relation to the residents of Cambridge, Massachusetts.

Oxonian is the corresponding term for Oxford and its University, traditionally considered a rival of the University of Cambridge.

Source

Chambers English Dictionary, Cambridge University Press, 1988.