Questor
Questor , noun
[Latin quaestor, contr. from quaesitor, from quaerere, quaesitum, to seek for, ask: compare French questeur.]
(Rom. Antiquities) An officer who had the management of the public treasure; a receiver of taxes, tribute, etc.; treasurer of state.
At an early period there were also public accusers styled questors, but the office was soon abolished.