- St. John-O'Connor
- St. John-Stevas
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Norman Antony Francis, Baron St. John of Fawsley b. 18 May 1929, d. 2 Mar 2012
- St. Johnston
- St. Jules
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Caroline Rosalie Adelaide b. 1785, d. 1862
- St. Julien
- St. Jullien
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Anne Marie de b. 1889Marie Rose de b. 1887Mary Rose de d. 13 Feb 1916
- St. Just
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1st Baron (Edward Charles) b. 29 May 1870, d. 26 Nov 19412nd Baron (Peter George) b. 22 Jul 1922, d. 1984
- St. Lac
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John d. c Mar 1558/59
- St. Laurence
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Elizabeth de d. a Jul 1373
- St. Laurent
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Jocelyn Kathleen b. 1974Mary Kathleen b. 23 Jul 1950Tannis Patricia Marie b. 1977
- St. Lawrence Irwing
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Mary d. 1927
- St. Lawrence
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'the Blind Lord' b. a 1509, d. 24 Oct 15891st Viscount (Thomas) b. 10 May 1730, d. 29 Sep 18012nd Viscount (William) b. 4 Oct 1752, d. 4 Apr 18223rd Viscount (Thomas) b. 16 Aug 1803, d. 4 Feb 18744th Viscount (William Ulick Tristram) b. 25 Jun 1827, d. 9 Mar 1909Adam d. 1334Catherine d. 4 Apr 1879Cecilia d. 1638Christopher, 1st Baron Howth d. fr 17 Sep 1462 - 24 Jan 1463/64Christopher, 4th Baron Howth b. c 1502, d. 20 Apr 1542Christopher, 7th Baron Howth b. a 1509, d. 24 Oct 1589Christopher, 9th Baron Howth d. 24 Oct 1619Edward d. 21 Jun 1842Edward, 5th Baron Howth b. c 1508, d. 2 Jul 1549Elizabeth d. a 20 Mar 1564Elizabeth d. 1627Elizabeth d. 1799Elizabeth b. 1804, d. 1863Elizabeth Anne b. c 1790, d. 12 Jan 1885Emily d. 6 Nov 1868Emily b. 13 Aug 1807, d. 5 Dec 1842Emma d. 1865Frances d. 1842Frances Elizabeth d. 1871Harriet d. 2 Feb 1830Henrietta Eliza b. 1851, d. 22 Aug 1935Henriette Elizabeth Digby d. 5 Mar 1884Henry d. 1787Isabella d. 28 Oct 1836
Isabella d. 10 Nov 1830
Isabella b. 2 Aug 1729, d. 20 Oct 1794Isabella b. c 1783, d. Apr 1827Joan d. 11 Aug 1518Letitia d. 1833Lucy b. c 1711Margaret d. 16 Nov 1637Margaret b. c 1775, d. 19 Sep 1856Margaret Frances d. 9 Jan 1929Marian d. 1531Mary d. 1825Mary d. 16 Oct 1715Mary d. 15 Nov 1864Mary d. 4 Aug 1787Mary b. 26 Oct 1752, d. 20 Jul 1793Matilda d. 1849Nicholas d. 29 Sep 1404Nicholas, 10th Baron Howth b. c 1599, d. 1643/44Nicholas, 3rd Baron Howth d. 10 Jul 1526Nicholas, 8th Baron Howth b. c 1555Raleigh b. c 1917, d. 7 Jul 2007Richard d. b 1542Richard d. 21 Mar 1659Richard, 6th Baron Howth b. a 1508, d. 1558Robert Kingsborough b. 29 Sep 1797, d. Jun 1886Robert, 2nd Baron Howth d. 1486Rose b. 2 Nov 1582Stephen d. 1435Thomas d. 1833Thomas b. 1755, d. 10 Jan 1831Thomas Kenelm Digby b. 12 Dec 1855, d. 8 May 1891Thomas, 11th Baron Howth b. a 1599, d. bt 5 Aug 1649 - 3 Oct 1649Thomas, 13th Baron Howth b. 1659, d. 30 May 1727Thomas, 1st Earl of Howth b. 10 May 1730, d. 29 Sep 1801Thomas, 3rd Earl of Howth b. 16 Aug 1803, d. 4 Feb 1874Vincent Charles Raleigh b. c 1917, d. 7 Jul 2007Viscountess (Mary) b. 26 Oct 1752, d. 20 Jul 1793William Ulick Tristram, 4th Earl of Howth b. 25 Jun 1827, d. 9 Mar 1909William, 12th Baron Howth b. 14 Sep 1628, d. 17 Jun 1671William, 14th Baron Howth b. 11 Jan 1688, d. 4 Apr 1748William, 2nd Earl of Howth b. 4 Oct 1752, d. 4 Apr 1822 - St. Ledger
- St. Leger
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Achille d. 2 Oct 1962Achille d. 2 Oct 1962Agnes Claire b. 1890, d. 1900Agnes Mary Helyar d. 9 Aug 1919Algernon Edward, 8th Viscount Doneraile b. 10 Jun 1878, d. 18 Nov 1957Amy Eva d. 1942Anne d. 9 Oct 1599Anne b. 10 Aug 1439, d. 12 Jan 1476Anne b. 1466, d. 21 Apr 1526Anne b. 1480Anne b. 1555, d. 1636Anne b. 1762, d. 19 Jul 1809Anne Leslie d. 16 Jan 1929Anthony b. c 1496, d. 1559Anthony Rene b. 26 Jul 1920, d. 10 Mar 1943Anthony St b. c 1496, d. 1559Antoinette de b. 20 Jun 1856, d. 24 Jan 1948Archibald William b. 11 Apr 1853, d. 1934Arthur Hayes Francis b. 15 Jun 1846, d. 31 Jul 1902Arthur John Bonfoy b. 25 Nov 1859, d. 22 Mar 1939Arthur Mohun, 3rd Viscount Doneraile b. 7 Aug 1718, d. Aug 1750Arthur, 1st Viscount Doneraile d. 7 Jul 1727Arthur, 2nd Viscount Doneraile b. c 1695, d. 13 Mar 1733/34Barbara d. 1685Beverley Cora b. 1917Brenda Mary b. 11 Jul 1897Caroline Elizabeth d. 17 May 1913Catherine d. 12 Mar 1821Catherine d. Mar 1911Catherine d. 3 Apr 1751Catherine b. a 1519Catherine b. 1572, d. 1620Charles Arthur b. 14 Feb 1817, d. 4 Dec 1874Charlotte d. 2 Sep 1835Charlotte d. 2 Oct 1856Charlotte Anne d. 1883Charlotte Esther b. 28 Jan 1794, d. 7 Feb 1846Charlotte Hazel b. 1892, d. 17 Mar 1975Claire Amy b. 1928Cora Irene d. 1932Cornelia Georgina b. May 1851, d. 19 May 1923David Hugh b. 3 Nov 1950Dudley b. 1578, d. 1627Edith d. 2 May 1927Edward Frederick b. 23 Jul 1832, d. 5 Dec 1881Edward Hayes b. 1 Aug 1960Edward, 6th Viscount Doneraile b. 6 Oct 1866, d. 7 Sep 1941Eileen d. 30 Jun 1963Eliza Caroline d. 27 Feb 1900Elizabeth d. 22 May 1685Elizabeth d. 11 May 1772Elizabeth d. 17 Jan 1620Elizabeth d. 4 Dec 1768Elizabeth d. 28 Nov 1886Elizabeth d. 29 Apr 1871Elizabeth Adele b. 12 Jan 1953Emily Ursula Clare b. 18 Jul 1853, d. 11 Mar 1927Emmeline d. 1628Ethel d. 6 Feb 1942Evangeline b. 1900Frances d. 27 Jun 1867Francis Barry Boyle b. 1790, d. 20 Nov 1829Gaspard Douglas Anthony b. 1890, d. 1974Geoffrey Bayard b. 1892Georgiana d. 12 May 1818Georgiana Harriet d. 8 Nov 1947Grace Elizabeth d. 1934Gwendoline Mary Hope b. 1863, d. 27 Jun 1954Harriet b. c 1819, d. 17 Oct 1883Harriet Claire b. 12 Oct 1951Harry b. 1919Hayes Warham b. 1852, d. 1852Hayes, 2nd Viscount Doneraile b. 9 Mar 1755, d. 8 Nov 1819Hayes, 3rd Viscount Doneraile b. 9 May 1786, d. 27 Mar 1854