Four or more generations of descendants of George Ferdinand FitzRoy, 2nd Baron Southampton (1761-1810) if they are properly linked:
1. George Ferdinand FitzRoy, 2nd Baron Southampton (1761-1810)
- 2. Georgiana Maria FitzRoy (1785-1830)
- 2. Anne Caroline FitzRoy (1803-1857)
- 2. Charles FitzRoy, 3rd Baron Southampton (1804-1872)
- 3. Ismay Mary Helen Augusta FitzRoy (1863-1952)
- 4. Anna Ismay Ethel FitzRoy (1884-1966)
- 4. Victoria Alexandrina Mabel FitzRoy (1886-1969)
- 4. Violet Freddie FitzRoy (1888-1974)
- 4. Charles Alfred Euston FitzRoy, 10th Duke of Grafton (1892-1970)
- 5. Hugh Denis Charles FitzRoy, 11th Duke of Grafton (1919-2011) ... (more)
- 5. Anne Mildred Ismay FitzRoy (1920-2019) ... (more)
- 5. Charles Oliver Edward FitzRoy (1923-1944) ... (more)
- 5. Edward Anthony Charles FitzRoy (1928-c2007) ... (more)
- 5. Michael Charles FitzRoy (1932-1954) ... (more)
- 4. Edward Henry FitzRoy (1893-1917)
- 4. John Percy Samuel FitzRoy (1899-1945)
- 3. Frederica Louise Fitzroy (1864-1932)
- 3. Blanche Georgiana Fitzroy (1865-1944)
- 3. Charles Henry Fitzroy, 4th Baron Southampton (1867-1958)
- 3. Edward Algernon FitzRoy (1869-1943)
- 3. Ismay Mary Helen Augusta FitzRoy (1863-1952)
- 2. Henry FitzRoy (1807-1859)