Answer- Reeve: supervised the work on lord's property. He checked that everyone began and stopped work on time, and insured nothing was stolen. Senior officer of a borough.
Reeves were usually serfs, and were ordinarily elected by the serfs of the manor to supervise and organize the fields and crops. A reeve would also act as a go between for the other serfs and the feudal lord. Reeves were elected on an annual basis in many places.
There is a link below.