| Name | aka | Birth date | Birth location | Marriage date | Marriage location | Death date | Death location |
| Lucinda (Cindy) Le Donne | | February 11, 1962 | Framingham, Massachusetts | July 25 | | | |
| Reid Thomas Le Donne | | October 20, 1992 | | | | | |
| Russell Foster Le Donne | | February 17, 1960 | Framingham, Massachusetts | June 25 | | | |
| Mary Jane League | | June 17, 1834 | Hannibal, Missouri | June 20, 1855 | | April 1, 1876 | Hannibal, Missouri |
| Anna Belle Lee | | | Lexington, Kentucky | | | | |
| Katharine Celia Lee | | December 12, 1941 | | May 23, 1984 | Chicago, Illinois | | |
| Leofric of Mercia, Earl of Mercia | | | | Abt. 1030 | | August 31, 1057 | Bromley, Staffordshire |
| Leofwine, Earl of Mercia | | | | | | 1023 | |
| James Howard Leonard | | January 23, 1933 | Chicago, Illinois | September 2, 1961 | Lac du Flambeau, Wisconsin | January 11, 1991 | Houston, Texas |
| Joan Matthews Leonard | | January 11, 1966 | Chicago, Illinois | August 8, 1988 | Rutherford, California | | |
| John Howard Leonard | | August 27, 1970 | Chicago, Illinois | | | | |
| Margot Donald Leonard | | June 4, 1962 | Lake Forest, Illinois | | | | |
| Leotald of Macon, Count of Macon & Besancon | | | | | | | |
| Almeda Leverett | | | | | | | |
| Bertha Boykin Lewis | | | | | | | |
| Burwell Boykin Lewis, Col., LL. D. | | July 7, 1838 | Montgomery, Alabama | January 21, 1860 | University, Alabama | October 11, 1885 | University, Alabama |
| Caroline Matilda Lewis | | | | | | | |
| Elizabeth Shortridge Lewis | | February 7, 1861 | University, Alabama | July 21, 1886 | Tuscaloosa, Alabama | June 3, 1911 | Tuscaloosa, Alabama |
| Louise Lewis | | | | | | | |
| Nan Meem Lewis | | | | | | | |
| Nellie Bryce Lewis | | | | | | | |
| Paul Hamilton Lewis | | | | | | | |
| Rose Lewis | | | | | | | |
| Suzanne Lezay | | WFT Est. 1543-1566 | France | 1583 | France | 1596 | France |
| John Light | | | Portsmouth, Massachusetts | | | | |
| Thomas Ligon | | | | | | | |
| Lionel of Antwerp, 1st Duke of Clarence | | November 29, 1338 | Antwerp, Brabant, Belgium | August 15, 1342 | Tower of London, London, England | October 17, 1368 | Alba, Cuneo, Piedmont, Italy |
| Elizabeth Littleberry | | 1623 | | Abt. 1652 | | Abt. 1678 | Burmody Hundred, Henrico County, Virginia |
| Litwinde | | | | Abt. 850 | | | |
| Liudolf of Saxony, Count in Saxony | | Abt. 806 | | Abt. 836 | | 866 | |
| Liutgard of Saxony | | | | 947 | | November 18, 953 | |
| Liutpold of Bavaria, Margrave of Bavaria | | | | | | July 4, 907 | |
| Llewelyn ap Mervyn | | | | | | | |
| Angharad Ferch Llewelyn, Queen of Powys | | | | | | | |
| Llywarch ap Bran | | 1107 | Menai, Wales | WFT Est. 1139-1173 | | WFT Est. 1146-1198 | |
| Llywarch ap Hyfaidd of Dyfed | | | | | | | |
| Llywarch ap Trahaern, Lord of Pembroke | | 1070 | Arwystli, Wales | WFT Est. 1101-1123 | | 1128 | |
| Llywarch Hen ap Elidir | | | | | | | |
| Gwladys Verch Llywarch | | 1098 | Pembroke, Wales | WFT Est. 1126-1156 | | WFT Est. 1133-1193 | |
| Llywarch Verch Llywarch | | WFT Est. 1120-1146 | | WFT Est. 1171-1204 | | WFT Est. 1171-1232 | |
| Tanglwyst Verch Llywarch | | 1143 | Llywarch, Anglsy, Wales | WFT Est. 1171-1204 | | WFT Est. 1172-1237 | |
| Llywelyn ap Seisyll, Prince of Deheubarth | | | | | | 1023 | |
| Llywelyn Fawr (the Great) ap Iowerth | | 1173 | Aberffraw, Wales | WFT Est. 1196-1228 | | April 11, 1240 | Aberconway, Wales |
| Ragnar Lodbrock | | | | | | | |
| Lóridi | | | | | | | |
| Lou Ellen | | | | | | | |
| Louis I (the Pious) of Aquitaine, King | Louis (le Debonaire) | August 778 | | 798 | | April 30, 840 | |
| Louis II (the German), King of the East Franks | | Abt. 805 | | | | 876 | |
| Louis IX (St. Louis), King of France | | April 25, 1215 | France | May 1234 | | August 25, 1270 | Tunis, Africa |
| Louis VI (the Fat), King of France | | 1078 | France | April 1115 | Paris, Seine, France | August 1, 1137 | Seine, France |