Beadle

Noun

 * 1) a parish constable, a uniformed minor (lay) official, who ushers and keeps order
 * 2)  an attendant to the minister
 * 3) a warrant officer

Thesaurus
Bible clerk, Bible reader, G-man, MP, acolyte, almoner, anagnost, bailiff, beagle, bedral, bound bailiff, capitular, capitulary, captain, catchpole, chief of police, choir chaplain, churchwarden, clerk, commissioner, constable, deacon, deaconess, deputy, deputy sheriff, detective, elder, elderman, fed, federal, flic, gendarme, government man, inspector, lay elder, lay reader, lector, lecturer, lictor, lieutenant, mace-bearer, marshal, mounted policeman, narc, officer, parish clerk, patrolman, peace officer, police captain, police commissioner, police constable, police inspector, police matron, police officer, police sergeant, policeman, policewoman, portreeve, precentor, reader, reeve, roundsman, ruling elder, sacrist, sacristan, sergeant, sergeant at arms, sexton, shames, sheriff, sidesman, succentor, suisse, superintendent, teaching elder, thurifer, tipstaff, tipstaves, trooper, verger, vergeress