Servitor

In certain universities (including some colleges of University of Oxford and the University of Edinburgh), a servitor was an undergraduate student who received free accommodation (and some free meals), and was exempted from paying fees for lectures. The term is still used in New College, School of Divinity, University of Edinburgh where it refers to the staff who are responsible for patrolling, security, reception and are also on duty at formal occasions when their functions include carrying the mace and ushering.

At Oxford, servitors were originally expected to act as servants to the fellows of their college. By 1852 this requirement had largely fallen into disuse, and the term had been replaced (often by Clerk or Bible-clerk) at most colleges. The last recorded use of the term in Oxford was in 1867 (at Christ Church; the following year the same people were called Exhibitioners).

...
Wikipedia