Four or more generations of descendants of Isabella FitzRoy (1726-1782) if they are properly linked:
1. Isabella FitzRoy (1726-1782)
- 2. Francis Seymour-Conway, 2nd Marquess of Hertford (1743-1822)
- 3. Henry Augustus Seymour (1771-1847)
- 3. Francis Charles Seymour-Conway, 3rd Marquess of Hertford (1777-1842)
- 4. Francis Maria Seymour-Conway (1799-1822)
- 4. Richard Seymour-Conway, 4th Marquess of Hertford (1800-1870)
- 5. Richard Wallace, Bart (1818-1890) ... (more)
- 4. Henry Seymour-Conway (1805-1859)
- 2. Anne Seymour-Conway (1744-1787)
- 2. Henry Seymour (1746-1830)
- 2. Sarah Frances Seymour (1747-1770)
- 2. Robert Seymour (1748-1831)
- 3. Elizabeth Seymour (1775-1848)
- 4. Delmé Seymour Davies (1807-1869)
- 4. Anne Gertrude Frances Davies (c1809-)
- 4. Isabella Clarissa Davies (1811-1884)
- 5. Clarissa Elizabeth Russell (1837-1908) ... (more)
- 5. Gertrude Louisa Russell (1838-1877) ... (more)
- 5. Elizabeth Marianne Russell (1840-1863) ... (more)
- 5. Henry Charles Russell (1842-1922) ... (more)
- 5. Isabella Sophia Russell (1844-1863) ... (more)
- 5. George William Erskine Russell (1853-1919) ... (more)
- 3. Henry Seymour (c1776-1843)
- 3. Frances Isabella Seymour (c1777-1838)
- 4. Anne Caroline FitzRoy (1803-1857)
- 4. Charles FitzRoy, 3rd Baron Southampton (1804-1872)
- 5. Ismay Mary Helen Augusta FitzRoy (1863-1952) ... (more)
- 5. Frederica Louise Fitzroy (1864-1932) ... (more)
- 5. Blanche Georgiana Fitzroy (1865-1944) ... (more)
- 5. Charles Henry Fitzroy, 4th Baron Southampton (1867-1958) ... (more)
- 5. Edward Algernon FitzRoy (1869-1943) ... (more)
- 4. Henry FitzRoy (1807-1859)
- 3. Anna Maria Seymour (1781-)
- 3. Gertrude Hussey Carpenter Seymour (1784-1825)
- 3. Elizabeth Seymour (1775-1848)
- 2. Gertrude Seymour-Conway (1750-1793)
- 2. Frances Seymour-Conway (1751-1820)
- 3. Catherine Pelham-Clinton (1776-1804)
- 4. Catherine Pleydell-Bouverie (1801-1875)
- 5. Alfred Buckley (1829-1900) ... (more)
- 5. Edward William Buckley (1829-1840) ... (more)
- 5. Duncombe Frederick Batt Buckley (1831-1855) ... (more)
- 5. Frances Gertrude Buckley (1832-1921) ... (more)
- 5. Felix John Buckley (1834-1911) ... (more)
- 5. Victor Buckley (1838-1882) ... (more)
- 4. Francis Anne Pleydell-Bouverie (1804-1804)
- 4. Catherine Pleydell-Bouverie (1801-1875)
- 3. Henry Pelham-Clinton (1777-1779)
- 3. Catherine Pelham-Clinton (1776-1804)
- 2. Elisabeth Seymour-Conway (1754-1825)
- 2. Isabella Rachael Seymour-Conway (1755-1825)
- 2. Edward Seymour (1757-1785)
- 2. Hugh Seymour (1759-1801)
- 3. George Francis Seymour (1787-1870)
- 4. Francis George Hugh Seymour, 5th Marquess of Hertford (1812-1884)
- 5. Frederica Georgina Seymour (1840-1848) ... (more)
- 5. Horatia Elizabeth Seymour (1842-1922) ... (more)
- 5. Hugh de Grey Seymour, 6th Marquess of Hertford (1843-1912) ... (more)
- 5. Florence Catherine Seymour (1845-1921) ... (more)
- 5. Albert Charles Seymour (1847-1891) ... (more)
- 5. Georgina Emily Lucy Seymour (1848-1944) ... (more)
- 5. Ernest James Seymour (1850-1930) ... (more)
- 5. Constance Adelaide Seymour (1852-1915) ... (more)
- 5. Mary Margaret Seymour (1855-1948) ... (more)
- 5. Victor Alexander Seymour (1859-1935) ... (more)
- 4. Georgiana Isabella Seymour (1813-1848)
- 4. Horatia Louisa Seymour (1815-1829)
- 4. Henry George Seymour (1818-1869)
- 5. George Hoste Seymour (1862-1885) ... (more)
- 5. Charles Derick Seymour (1863-1935) ... (more)
- 5. Alexandra Georgina Seymour (1865-1942) ... (more)
- 5. Emily Augusta Seymour (1866-1960) ... (more)
- 5. Horatia Anne Seymour (1868-1919) ... (more)
- 4. Emily Charlotte Seymour (1825-1892)
- 4. Matilda Horatia Seymour (1830-1916)
- 4. Laura Wilhelmina Seymour (1833-1912)
- 5. Feodora Georgina Maud von Gleichen (1861-1922) ... (more)
- 5. Albert Edward Wilfred von Gleichen (1863-1937) ... (more)
- 5. Victoria Alice Leopoldine Ada Laura von Gleichen (1868-1951) ... (more)
- 5. Helena Emily von Gleichen (1873-1947) ... (more)
- 4. William Frederick Ernest Seymour (1838-1915)
- 5. Mabel Louisa Seymour (1872-1951) ... (more)
- 5. Edward Noel Seymour (1878-1880) ... (more)
- 5. Hazel Georgina Seymour (1880-1920) ... (more)
- 5. Dorothy Nina Seymour (1882-1953) ... (more)
- 5. Mary Freda Seymour (1887-1968) ... (more)
- 4. Francis George Hugh Seymour, 5th Marquess of Hertford (1812-1884)
- 3. Hugh Henry John Seymour (1790-1821)
- 3. Horace Beauchamp Seymour (1791-1851)
- 4. Charles Francis Seymour (1819-1854)
- 4. Frederick Beauchamp Paget Seymour, 1st Baron Alcester (1821-1875)
- 4. Adelaide Horatia Elizabeth Seymour (1825-1877)
- 5. Victoria Alexandrina Spencer (1855-1906) ... (more)
- 5. Charles Robert Spencer, 6th Earl Spencer (1857-1922) ... (more)
- 4. Gertrude Elizabeth Seymour (1827-1829)
- 3. William John Richard Seymour (1793-1801)
- 3. Horatia Maria Frances Seymour (1795-1853)
- 3. Frederick Charles William Seymour (1797-1856)
- 4. Conway Frederick Charles Seymour (1823-1914)
- 4. Mary Frederica Seymour (1824-1902)
- 4. Eliza Horatia Frederica Seymour (1833-1896)
- 4. Augusta Georgiana Sophia Seymour (1834-1901)
- 4. Charlotte Frances Frederica Seymour (1835-1903)
- 4. Frederick Horace Arthur Seymour (1836-1914)
- 4. Arthur Laurence Hervey Seymour (1838-1859)
- 4. Horace Alfred Damer Seymour (1843-1902)
- 3. Mary Georgiana Emma Seymour (1798-1848)
- 3. George Francis Seymour (1787-1870)
- 2. William Seymour (1759-1837)
- 3. Edward Seymour (1801-1853)
- 3. Henry Seymour (1802-1867)
- 2. George Seymour (1763-1848)
- 3. George Hamilton Seymour (1797-1880)
- 3. Isabella Horatia Seymour (1801-1856)
- 4. Henry George Liddell, 2nd Earl of Ravensworth (1821-1903)
- 5. Mary Maud Diana Liddell (1861-1958) ... (more)
- 5. Lillian Mary Harriet Diana Liddell (1872-1962) ... (more)
- 4. Maria Liddell (1822-1883)
- 4. William Liddell (1824-1834)
- 4. Hedworth Liddell (1825-1863)
- 4. Seymour Liddell (1827-1869)
- 4. Florentia Emily Liddell (1828-1909)
- 4. Horatia Frances Liddell (1829-1846)
- 4. Elizabeth Liddell (1831-1920)
- 4. Emily Liddell (1832-1914)
- 4. Atholl Charles John Liddell, 3rd Earl of Ravensworth (1833-1904)
- 4. Harriette Emily Liddell (1835-1913)
- 4. Eleanor Liddell (1837-1912)
- 4. Albert George Liddell (1841-c1841)
- 4. Victoria Isabella Liddell (1841-1935)
- 4. Henry George Liddell, 2nd Earl of Ravensworth (1821-1903)
- 3. Emily Henrietta Seymour (-1887)
- 4. Henry Bentinck Boyle, 5th Earl of Shannon (1833-1890)
- 5. Richard Henry Boyle, 6th Earl of Shannon (1860-1906) ... (more)
- 5. Henry George Boyle (1862-1908) ... (more)
- 5. Robert Francis Boyle (1863-1922) ... (more)
- 5. Walter John Harry Boyle (1869-1939) ... (more)
- 5. Edward Spencer Harry Boyle (1870-1937) ... (more)
- 5. Algernon Douglas Edward Harry Boyle (1871-1949) ... (more)
- 4. Frederick James Boyle (1835-1861)
- 4. Henry Bentinck Boyle, 5th Earl of Shannon (1833-1890)