Name
- Giovannoni, Devota, correspondent of William A'Court, 2nd Baronet, fl 18151
- Green, James, Consul at Tangier, fl 1809-18171
- Green, Philip Inmer, Consul at Patras1
- Greig, Hector, acting Chief Military Secretary at Malta; KCMG 18391
- Grenon, Charles, British agent in Corsica and correspondent of William A'Court, 2nd Baronet, fl 1815-18161
- Grieves, R., of the Quarantine Office, Malta1
- Hacket, Richard, correspondent of Sir William A'Court, 1st Baron Heytesbury, fl 18171
- Hamilton, Alexander, 10th Duke of Hamilton, politician, diplomat and art collector, 1767-18521
- Hammett, Alexander, American Consul at Naples1
- Heard, Isaac, Garter King at Arms1
- Herries, John Charles, statesman1
- Hopkins, Samuel, Deputy Commissary-General of British Forces at Messina1
- Horn, Johann, of Hanover; formerly in the Russian service1
- Horner, Bentley and Co, Palermo1
- Hoste, William, 1st Baronet1
- Hunter, Jameson, British agent1
- Intonti, N., Neapolitan Commissarary of Police1
- Jabat, Juan, Admiral; Spanish Envoy Extraordinary in London1
- Jackson, George, KCH 1832; diplomatist, fl 18321
- James Inglis and Co, insurance agents1