Name
- Somerset, Mary1
- Somerset, Mary, wife of Henry, 1st Duke of Beaufort1
- Somerset, Mary, wife of Henry, 2nd Duke of Beaufort1
- Southwell, Robert, successively Clerk of the Privy Council, Envoy to Spain and Portugal, and Secretary for Ireland1
- Spanheim, Ezechiel von, Baron Prussian envoy in London1
- Spencer, Caroline, wife of George, 3rd Duke of Marlborough1
- Spencer, Charles, 2nd Duke of Marlborough, Master-General of the Ordnance1
- Spencer, Judith, 3rd wife of Charles, 3rd Earl of Sunderland1
- Spry, Arthur1
- Stanhope, Charles, 3rd Earl of Harrington1
- Stanhope, James, General, afterwards Viscount and Earl Stanhope, Secretary of State, etc1
- Stanley, Elizabeth, 1st wife of Edward 12th Earl of Derby1
- Stepney, George, diplomatist1
- Stepney, John, Baronet, Envoy Extraordinary at Berlin1
- Steuart, James, afterwards 2nd Baronet, of Goodtrees and Coltness1
- Stone, Andrew, Under-Sec of State1
- Storer, Thomas James1
- Straton, Alexander, of Add MS 280631
- Stuart, Henry Benedict Maria Clement, Cardinal, Bishop of Tusculum, self-styled Henry IX1
- Stuart, James Francis Edward, Prince the 'Old Pretender'1