- Ian
- Ida
- Illey
- Ina of the West Saxons
- Ingeborg of Denmark
- Ingegerd
- Ingelar
- Ingham
- Ingles
- Inglose
- Ingolf
- Ingrid Victoria of Sweden
- Irby
- Irene
- ? (b. 1 May 1818)
- ? (b. 1939)
- Irene of Hesse
- Irina
- Irmingard
- ? (b. 1902, d. 1903)
- ? (b. 1923)
- Ironsides
- Irvin
- Irvine
- Irwin
- Isabel
- Isabel of Scotland
- Isabella
- ?
- ? (b. 16 Jun 1332, d. bef Oct 1382)
- Isabella of Angouleme
- Isabella of Castile
- Isabella of France
- ? (b. 1292, d. 22 Aug 1358)
- ? (b. 9 Nov 1387, d. 13 Sep 1409)
- Isabella of Hainault
- Isabelle of Hainault
- Israel
- Itta
- Ivar
- Jack
- Jack Spencer
- Jackson
- Jacob
- Jacqueline of Holland
- Jacquetta of Luxembourg
- James
- ?
- ? (b. 1476, d. 1503)
- ? (b. 1908, d. 1975)
- James I
- James II
- James III
- James IV
- ? (b. 1473, d. 9 Sep 1513)
- James of Cambridge
- ? (b. 12 Jul 1663, d. 22 May 1667)
- James Patrick
- James V
- Jameson
- Jan
- Jane
- ? (d. bef 1762)
- ?
- ?
- ?
- ? (b. 16 Jun 1782, d. 1870)
- Janice
- Jarrard
- Jarratt
- Jasper
- Jean of Luxembourg
- Jenita
- Jenkins
- Jenna
- Jenney
- Jennie
- Jennings
- Jenny
- Jeremy
- Jermingham
- Jernegan
- Jerome
- Jerry
- Joachim
- ? (b. 1890, d. 1920)
- ? (b. 1969)
- ? (b. 1984)
- Joan
- ? (d. 10 Jul 1397)
- ? (d. 17 Feb 1561)
- ?
- ?
- ?
- ? (b. 1265, d. INFANT)
- ? (b. 29 Sep 1328, d. 8 Aug 1385)
- ? (b. abt Feb 1335, d. 2 Sep 1348)
- Joan Beaufort
- Joan of Acre
- ? (b. abt 1272, d. 23 Apr 1307)
- Joan of Navarre
- ? (b. abt 1370, d. 9 Jul 1437)
- Joan of Norfolk
- Joan of the Tower
- ? (b. 5 Jul 1321, d. 7 Sep 1362)
- Joanna
- ?
- ? (b. abt Feb 1335, d. 2 Sep 1348)
- ? (b. 1936, d. 1939)
- Joe Jim
- Johann Georg of Hohenzollern
- John
- ?
- ? (b. 1166, d. 1216)
- ? (b. 10 Jul 1266, d. 3 Aug 1271)
- ? (b. 20 Jun 1389, d. 15 Sep 1435)
- ? (b. 1479, d. 1503)
- ? (b. 1484, d. 1536)
- John Alexander
- ? (b. 6 Apr 1871, d. 7 Apr 1871)
- John Friso
- John I
- John II
- John of Eltham
- ? (b. abt 15 Aug 1316, d. 14 Sep 1336)
- John of Gaunt
- ? (b. Mar 1340, d. 3 Feb 1399)
- Johnson
- Johnston
- Jolye
- Jondreau
- Jones
- Jordan
- Jorn
- Joseph of Austria
- Joseph of Saxe-Altenburg
- Josephine Charlotte
- Josephus HARRIS
- Josie
- Juan Carlos
- Judith
- Judy
- Julian Katherine
- Juliana of Netherlands
- Junell
- Kakar
- Kalfus
- Henry (b. 1756, d. aft 1830)
- Kamping
- Kaner
- Karella
- Karl
- Karl of Leiningen
- ? (b. 1898, d. 1946)
- ? (b. 1928)
- Karnovich
- Kate
- Katharine Fraser
- Katherine
- Katherine B.
- Katy
- Kautz
- Keeler
- Kehr
- Keightley
- Kellough
- Kellum
- Susannah (b. 22 Mar 1779, d. 22 Jul 1848)
- Kelly
- Kennedy
- Kenneth II
- Kerrick
- Kesine
- Ketelsen
- Keyes
- Kidd
- Kighley
- Kiley
- Killingsworth
- Kilpatrick
- Kimsey
- King
- Kinge
- Kingsley
- Kinkead
- Kinnamon
- Kira Melita zu Leiningen
- Kira of Russia
- Kirby
- Kitty
- Knapp
- Knevet
- Knight
- Knightley
- Knollys
- Ann (b. abt 1560)
- Francis (b. 1514, d. 19 Jul 1596)
- Knud
- Knyvet
- Kolle
- Koulikovsky
- Kramer
- Krasick
- Kreisel
- Kreuger
- Krzesinska
- Kyme
- Kytson
- L[Unknown]
- La Zouche
- Lackland
- Lacon
- Lacy
- ?
- Agnes (b. 1738, d. 1826)
- Alexander
- Archibald (b. 1758, d. 1822)
- Austin (b. bet 1785 and 1790)
- Austin H. (b. abt 1809, d. 1842/43)
- Austin J. (b. Feb 1856, d. aft 1920)
- Buck (b. 1872)
- Burley
- Burwell
- Cleveland
- David
- David S. (b. bet 1785 and 1790)
- Dorcas
- Drury (b. 1758, d. 1815)
- Elisha (b. 1792, d. 1862)
- Elizabeth
- Elkanah
- Elkanah
- Elkanah (b. bet 1720 and 1730, d. 1777)
- Elliott
- Elliott (b. abt 1725, d. 1777)
- Elliott (b. abt 1732)
- Elliott (b. 1756)
- Gertrude (b. 1864)
- Henry (b. 1743)
- Iline Garnell
- Jack Levi (b. 13 Oct 1862, d. 30 Apr 1918)
- John
- John B. (b. bet 1820 and 1825, d. abt 1848)
- John Robert (b. 1858, d. 1914)
- Jordan (b. 1764, d. 1840)
- Joseph
- Julia Lee (b. aft 1878, d. 15 Jun 1929)
- Katherine
- Kathrine (b. aft 1879)
- Keziah (b. 1758)
- Lionel
- Lionel (d. 1816)
- Louisa (b. 1751)
- Lucille
- Lucy Ann (b. 1850)
- Lylas Nick (b. 1870)
- Martha Mathilda (b. 6 Mar 1854, d. 3 Jun 1936)
- Martin (b. 1789, d. 1842)
- Mary
- Mary (b. 1731)
- Nancy (b. 1795, d. 1886)
- Nathaniel
- Nathaniel (b. abt 1715, d. 1781)
- Nicholas (b. 1790, d. 1858)
- Noah (b. abt 1750, d. 1826)
- Phebe (b. abt 1730)
- Robert Austin (b. 17 Jan 1847, d. 4 Jul 1928)
- Samuel B. (b. bet 1810 and 1812)
- Sarah
- Sarah (b. 4 Feb 1779, d. 29 Jan 1859)
- Stephen (b. abt 1780, d. aft 1850)
- Steven (b. bet 1705 and 1710, d. abt 1772)
- Susannah (b. abt 1725)
- Susannah (b. 1750)
- Thomas (b. abt 1660, d. abt 1750)
- Thomas (b. 1683/84)
- Thomas (b. bet 1705 and 1708)
- Thomas (b. 1728, d. 1802)
- Thomas (b. abt 1730, d. 1798)
- Thomas (b. bet 1782 and 1786)
- Thomas (b. 24 Jul 1860, d. 15 Aug 1927)