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| style="width=30em" |   | align=right | page |- |Simeon or Simons, Joseph (1594-1671) whose real name was Emmanuel Lobb | |- |Simeonis, Symon (fl. 1322) | |- |Simmons, Bartholomew (1804-1850) | |- |Simmons, Samuel (1777?-1819) | |- |Simmons, Samuel Foart (1750-1813) | |- |Simmons, William Henry (1811-1882) | |- |Simms, Frederic Walter (1803-1865) | |- |Simms, William (1793-1860). See under Simms, Frederic Walter. | |- |Simnel, Lambert (fl. 1487-1525) | |- |Simon de Senlis, Earl of Northampton and Huntingdon (d. 1109). See Senlis. | |- |Simon du Fresne, Fraxinetus, or Ash (fl. 1200). | |- |Simon de Wells (d. 1207) | |- |Simon of Montfort, Earl of Leicester (1208?-1265). See Montfort. | |- |Simon of Faversham (fl. 1300) | |- |Simon Sudbury (d. 1381) See Sudbury. | |- |Simon the Anchorite (fl. 1512-1529) | |- |Simon the Little (1530?-1606) See Simwnt. | |- |Simon, Abraham (1622?-1692?) | |- |Simon, John (1675?-1751) | |- |Simon, Sir John (1818-1897) | |- |Simon, Thomas (1623?-1665) | |- |Simons, Joseph (1594-1671) See Simeon. | |- |Simpson. See also Simson. | |- |Simpson or Sympson, Christopher (1605?-1669) | |- |Simpson, David (1745-1799) | |- |Simpson or Simson, Edward (1578-1651) | |- |Simpson, Elspeth (1738-1791) See Buchan. | |- |Simpson, Sir George (1792-1860) | |- |Simpson, James (1781-1853) | |- |Simpson, Sir James (1792-1868) | |- |Simpson, Sir James Young (1811-1870) | |- |Simpson, Mrs. Jane Cross (1811-1886) | |- |Simpson, John (1746-1812) | |- |Simpson, John (1782-1847) | |- |Simpson, John Palgrave (1807-1887) | |- |Simpson, Nathaniel (1599-1642) | |- |Simpson, Richard (1820-1876) | |- |Simpson, Robert (1795-1867) | |- |Simpson, Sidrach (1600?-1655) | |- |Simpson, Thomas (fl. 1620) | |- |Simpson, Thomas (1710-1761) | |- |Simpson, Thomas (1808-1840) | |- |Simpson or Sympson, William (1627?-1671) | |- |Sims, James (1741-1820) | |- |Sims, John (1749-1831) | |- |Simson. See also Simpson. | |- |Simson, Alexander (1570-1639). See under Simson, Andrew (d. 1590?) | |- |Simson, Andrew (d. 1590?) | |- |Simson, Andrew (1638-1712) | |- |Simson, Archibald (1564?-1628) | |- |Simson, John (1668?-1740) | |- |Simson, Patrick (1556-1618) | |- |Simson, Robert (1687-1768) | |- |Simson, Thomas (1696-1764) | |- |Simson, William (d. 1620?) See under Simson, Andrew (d. 1590?) | |- |Simson, William (1800-1847) | |- |Simwnt Fychan, i.e. Simon the Little (1530?-1606) | |- |Sinclair, Andrew (d. 1861) | |- |Sinclair, Catherine (1800-1864) | |- |Sinclair, George, fourth Earl of Caithness (d. 1582) | |- |Sinclair, George, fifth Earl of Caithness (1566?-1643) | |- |Sinclair or Sinclar, George (d. 1696) | |- |Sinclair, George (1786-1834) | |- |Sinclair, Sir George (1790-1868) | |- |Sinclair, Sir Henry (d. 1330?). See under Sinclair, Sir William, or William de Saint Clair (fl. 1266-1303). | |- |Sinclair, Sir Henry, Earl or Prince of Orkney (d. 1400?) | |- |Sinclair, Henry, second Earl of Orkney (d. 1418) | |- |Sinclair, Henry (1508-1565) | |- |Sinclair, James (d. 1762) | |- |Sinclair, James, fourteenth Earl of Caithness (1821-1881) | |- |Sinclair, John (d. 1566) | |- |Sinclair, John, seventh Lord Sinclair (1610-1676) | |- |Sinclair, John (1683-1750) | |- |Sinclair, Sir John (1754-1835) | |- |Sinclair, John (1791-1857) | |- |Sinclair, John (1797-1875) | |- |Sinclair, Oliver (fl. 1537-1560) | |- |Sinclair, Sir Robert, Lord Stevenson (1640?-1713) | |- |Sinclair, Sir William or William de Saint Clair (fl. 1266-1303) | |- |Sinclair or Saint Clair, Sir William (d. 1330) | |- |Sinclair, William (d. 1337) | |- |Sinclair, Sir William, third Earl of Orkney and first Earl of Caithness (1404?-1480) | |- |Sinclair, William (1804-1878) | |- |Sindercombe or Sindercome, Miles (d. 1657) | |- |Singer, Elizabeth (1674-1737). See Rowe, Mrs. Elizabeth. | |- |Singer, George John (1786-1817) | |- |Singer, John (fl. 1594-1602) | |- |Singer, Joseph Henderson (1786-1866) | |- |Singer, Samuel Weller (1783-1858) | |- |Singleton, Henry (1766-1839) | |- |Singleton, Robert or John (d. 1544) | |- |Singleton, Robert Corbet (1810-1881) | |- |Singleton, Thomas (1783-1842) | |- |Sinnich, John (d. 1666) | |- |Sion or John, Llywelyn (d. 1616?) | |- |Sion Treredyn (fl. 1651). See Edwards, John. | |- |Sion y Potiau (1700?-1776). See Edwards, John. | |- |Sion Lleyn, known to his neighbours as John Roberts (1749-1817) | |- |Siôn Glanygors (1767-1821). See Jones, John. | |- |Sirr, Henry Charles (1756-1841) | |- |Sirr, Henry Charles (1807-1872). See under Sirr, Henry Charles (1756-1841). | |- |Sirr, Joseph D'Arcy, D.D. (1794-1868). See under Sirr, Henry Charles (1756-1841). | |- |Sitric. See Sihtric. | |- |Siward (d. 1048) | |- |Siward, Earl of Northumberland (d. 1055) | |- |Siward' (d. 1075) | |- |Skae, David (1814-1873) | |- |Skeffington, Clotworthy, seventh Viscount and second Earl of Massereene (1742-1805) | |- |Skeffington, Sir John, second Viscount Massereene (d. 1695) | |- |Skeffington, John Skeffington Foster, tenth Viscount Massereene (1812-1863). See under Skeffington, Clotworthy, seventh Viscount and second Earl of Massereene. | |- |Skeffington, Sir Lumley St. George (1771-1850) | |- |Skeffington, Sir William, called 'The Gunner' (d. 1535) | |- |}