Name
- Crown Prince of Persia, Qajar dynasty, 1785-192526
- East India Company Envoy to Persia, 1826-183618
- HM Ambassador to Iran, 1807-198018
- Governor-General of Georgia, Russian Empire, Early 19th century16
- Political Resident, Persian Gulf, 1822-197115
- Government of Persia, Qājār dynasty, 1794-192511
- Government of India, Foreign and Political Department, 1783-19378
- Secretary of State for Foreign Affairs, 1782-19688
- Government of Bombay, Chief Secretary, 1803?-18766
- Government of Bombay, 1662-19475
- Government of Bengal, Chief Secretary, 1778?-1835?4
- Government of India, 1834-19474
- King of Bahrain, 1783-4
- Shāh of Persia, Qājār dynasty, 1794-19254
- Campbell, John Nicholl Robert, 2nd Baronet, army officer and diplomat, 1799-18703
- Commander-in-Chief of Egyptian Forces in Central Arabia, 1836-18403
- Foreign Office, 1782-19683
- Government of Oman, 1741-3
- Government of the Russian Empire, 1721-19173
- Political Agent, Turkish Arabia, 1812-18923