Name
- Graham, James, Marquis of Graham, 3rd Duke of Montrose (1790)1
- Grant, Alexander, 5th Baronet1
- Grant, C, army officer and correspondent of Robert Willimott, fl 18171
- Green, -, army officer, military agent in Catalonia and correspondent of Sir Charles Cotton, fl 18111
- Greene, William, of Southwark, clergyman, fl 1816-18211
- Grenville, James, Baron Glastonbury, of Add MS 382641
- Grenville, William Wyndham, 1st Baron Grenville, politician and Prime Minister, 1759-18341
- Griffin, John Griffin, 1st Baron Braybrooke, born Whitwell; army officer, 1719-17971
- Griffin, William, secretary of the Ordnance Office, fl 1810-18251
- Guppy, Sarah, of Bristol, correspondent of Robert Jenkinson, 2nd Earl of Liverpool, fl 1811-18141
- Guthrie, -, subject of the seizure of goods by Customs officers, fl 1815-18161
- Guthrie, George James, surgeon, 1785-18561
- Hadfield, Joseph, of Bonchurch; correspondent of Robert Jenkinson, 2nd Earl of Liverpool, fl 1815-18161
- Hall, Charles Henry, Dean of Christ Church, Oxford, 1763-18271
- Hamilton, Alexander, 10th Duke of Hamilton, politician, diplomat and art collector, 1767-18521
- Hamilton, John James, 1st Marquess of Abercorn1
- Hamilton, Thomas, 9th Earl of Haddington1
- Harcourt, George Simon, 2nd Earl Harcourt1
- Harcourt, William, 3rd Earl Harcourt1
- Harris, G- T-1