The Exchequer refers to the table used in the medieval period for monetary calculations , or sometimes "Chancellor of the Exchequer" in the SCA referring to the officer who is in charge of tracking money spent by local groups, and at the Kingdom level tracking it there. This entails a lot of paperwork.  

Baroness Antonia is our Barony Exchequer. You may contact our Exchequer at whitewaters {dot} exchequer {at} midrealm {dot} org.