Name
- Harman, John, of Add MS 347271
- Hay, Charles, of the Inland Revenue1
- Heber, Thomas, of Add MS 347271
- Henry, Princes of Wales, of Seal CV1
- Heraud, John Abraham, writer1
- Hill, Richard, of St. John's College, Cambridge1
- Hilson, John, of Jedburgh1
- Holland, Henry, 1st Baronet, FRS, 1788-18731
- Holles, Gervase1
- Howard, Henry, of Greystoke Castle Cumb1
- Hutton, Matthew, Rector of Aynho, Antiquary1
- Hyde, Edward, 1st Earl of Clarendon, 1609-16741
- Independent Labour Party1
- Institute of Journalists1
- James II, Duke of Brunswick-Lüneburg1
- James VI and I, King of Scotland, England and Ireland, 1566-1625, http://isni.org/isni/000000...1
- Jewitt, Llewellyn Frederick William, antiquary1
- Junius, Francis, Librarian to Lord Arundel1
- Kean, Charles John, actor1
- Knyvett, Thomas, Baron Knyvett1