Name
- Political Agent and Consul, Muscat, 1861-19714
- Sultan of Muscat and Oman, Āl Bū Sa‘īd Dynasty, 1861-19704
- Native Agent, Trucial Coast, Sharjah, c 1823-19493
- Crown Prince of Persia, Qajar dynasty, 1785-19252
- East India Company, Court of Directors, Secret Committee, 1683?-18572
- King of Bahrain, 1783-2
- Native Agent, Bahrain, c 1819-19002
- Persian Gulf Political Residency, 1822-19712
- Political Resident, Persian Gulf, 1822-19712
- Resident, Baghdad, 1798-18102
- Viceroy and Governor-General of India in Council, 1773-19472
- Barker, John, diplomat and horticulturist, 1771-18491
- East India Company Envoy to Persia, 1826-18361
- Emir of Bukhara, 1785-19201
- Emir of Diriyah, 1744-18181
- Government of Bengal, Chief Secretary, 1778?-1835?1
- Government of Persia, Qājār dynasty, 1794-19251
- Governor of Baghdad, c 1638-c 19171
- HM Ambassador to Iran, 1807-19801
- Residency, Baghdad, 1798-18101