Name
- Spencer, Francis Almeric, 1st Baron Churchill1
- Spencer, Henry John, diplomatist1
- Spiegel, Laurens Pieter van, Grand Pensionary of Holland1
- St. John, J-1
- Stadion, Johann Philipp Carl Joseph, Count, Imperial Envoy in London1
- Stewart, John, of Add MS 344561
- Sutton, Charles Manners-, Archbishop of Canterbury, 1755-18281
- Talbot, Mary Lucy, wife of T M Talbot, of Margam1
- Tayler, John1
- Temple - Nugent - Grenville, George, 2nd Earl Temple, Lord Lieutenant of Ireland, 1st Marquis of Buckingham (1784)1
- Thompson, Edward, Captain1
- Thurlow, Edward, 1st Baron Thurlow, Lord Chancellor1
- Tierney, George, President of the Board of Control1
- Tighe, Edward, Commissioner of Accompts for Ireland1
- Tonson, Charlotte Theodosia, wife of William, 2nd Baron Riversdale1
- Tonson, William, Baron Riversdale, Colonel1
- Townshend, Anne, 2nd wife of George 1st Marquess Townshend1
- Turnbull, John, of Add MS 344561
- Vansittart, Arthur, Colonel1
- Vansittart, Caroline, wife of Colonel Arthur Vansittart1