catchpole

from Bouvier's Law Dictionary, Revised 6th Ed (1856)
CATCHPOLE, officer. A name formerly given to a sheriff's deputy, or to a 
constable, or other officer whose duty it is to arrest persons. He was a 
sort of serjeant. The word is not now in use as an official designation. 
Minshew ad verb. 
    

[email protected]