quaestor

Concise Oxford English Dictionary © 2008 Oxford University Press:
quaestor /ˈkwiːstə/

▶noun (in ancient Rome) any of a number of officials in charge of public revenue and expenditure.

– derivatives
quaestorial adjective,
quaestorship noun.

– origin L., from an old form of quaesit-, quaerere ‘seek’.