What is another word for "representative"?

Roget's Thesaurus (1911) lists these synonyms for "representative": ablegate, accredit, acting, advocate, agent, alter, ambassador, answer, apparitor, appear, arbitrator, archon, attache, attorney, auctioneer, bag, bagman, bailiff, bearer, behalf, bellman, boy, brief, broker, business, cable, carrier, champion, chancellor, charge, chore, clerk, commercial, commissary, commission, commissionaire, commissioner, committee, consignee, consul.