I know the meaning of vicemaster but I didn't know if the "vicemaster of a Cambridge college" means "vicemaster of one of the Cambridge colleges" or means "vicemaster of the whole of Cambridge university"?
The text is here:
The first week passed in a blur of lectures. In the second week, every student was assigned a supervisor to guide their research. My supervisor, I learned, was the eminent Professor Jonathan Steinberg, a former vicemaster of a Cambridge college, who was much celebrated for his writings on the Holocaust.