What is another word for "viceroy"?

Roget's Thesaurus (1911) lists these synonyms for "viceroy": ablegate, accession, accredit, acting, agency, agent, agentship, alter, and, answer, appear, appointment, archon, assignment, attorney, authority, behalf, bird, brevet, brief, captive, capture, champion, chancellor, charge, charter, clerkship, close, commission, commissioner, consignee, consignment, consul, coronation, custody, delegate, delegation, deputation, deputy, designation.