| Patronyme | Lieu | Nombre de personnes | Date de début | Date de fin |
|---|
| LAURIN | France - 51 Marne - Saint Imoges | 2 | 1837 | 1837 |
| LAUX | Belgique - LXM Luxembourg - Autelbas | 1 | 1848 | 1848 |
| LAVALADAS | France - 23 Creuse - Bourganeuf | 1 | 1785 | 1785 |
| LAVERNE | France - 08 Ardennes - Aussonce | 1 | 1749 | 1812 |
| LE BORGNE | France - 02 Aisne - Manicamp | 1 | 1677 | 1747 |
| LE BOUCHÉ | France - 51 Marne - Bazancourt | 1 | 1777 | 1777 |
| LE GUILLAN | France - 44 Loire-Atlantique - Trignac | 1 | 1947 | 1947 |
| France - 77 Seine-et-Marne - Lagny-sur-Marne | 1 | 1995 | 1995 |
| LE JARDIN | France - 23 Creuse - Saint Pierre Cherignat | 2 | 1712 | 1712 |
| LE LORAIN | France - 08 Ardennes - Aussonce | 1 | 1732 | 1732 |
| LE MAITRE | France - 08 Ardennes - Aussonce | 3 | 1708 | 1743 |
| LE MASLE | France - 08 Ardennes - Hauteville | 1 | 1697 | 1755 |
| LE NEUTRE | France - 80 Somme - Vraignes en Vermandois | 1 | 1843 | 1843 |
| LE ROUGE | France - 51 Marne - Juvigny | 1 | 1678 | 1752 |
| LE ROUX | France - 51 Marne - Courtagnon | 1 | 1727 | 1782 |
| LEBASCOU | France - 23 Creuse - Saint Martin Sainte Catherine | 1 | 1700 | 1700 |
| LEBEAU | France - 23 Creuse - Saint Pierre Cherignat | 1 | 1790 | 1827 |
| LEBEAUX | France - 51 Marne - Damery | 1 | 1747 | 1777 |
| LEBECQ | France - 59 Nord - Avesnes les Aubert | 2 | 1678 | 1742 |
| LEBÉ | France - 51 Marne - Pomacle | 1 | 1783 | 1874 |
| LEBLANC ou BONNEBLANC | France - 23 Creuse - Saint Goussaud | 1 | 1776 | 1826 |
| France - 23 Creuse - Saint-Goussaud | 1 | 1795 | 1795 |
| LEBLANC | France - 23 Creuse - Châtelus le Marcheix | 1 | 1704 | 1719 |
| France - 23 Creuse - Saint Goussaud | 1 | 1744 | 1744 |
| France - 51 Marne - Reims | 1 | 1814 | 1836 |
| France - 51 Marne - Val de Vesle | 1 | 1882 | 1882 |
| LEBRUN | France - 08 Ardennes - Avançon | 2 | 1846 | 1911 |
| France - 08 Ardennes - Chaumont Porcien | 1 | 1860 | 1860 |
| France - 08 Ardennes - Coucy | 1 | 1771 | 1771 |
| France - 08 Ardennes - Juniville | 1 | 1940 | 1940 |
| France - 08 Ardennes - Logny les Chaumont | 2 | 1655 | 1739 |
| France - 08 Ardennes - Novion Porcien | 1 | 1787 | 1787 |
| France - 08 Ardennes - Thugny-Trugny | 2 | 1809 | 1825 |
| France - 51 Marne - Warmeriville | 1 | 1881 | 1881 |
| LECLERC | France - 02 Aisne - Ramecourt | 1 | 1606 | 1686 |
| France - 51 Marne - Bazancourt | 1 | 1773 | 1786 |
| France - 51 Marne - Reims | 1 | 1731 | 1731 |
| LECLERCQ | France - 02 Aisne - Villers Agron Aiguizy | 1 | 1704 | 1704 |
| France - 51 Marne - Aougny | 1 | 1756 | 1756 |
| LECLERE | France - 08 Ardennes - Rethel | 2 | 1952 | 1952 |
| France - 08 Ardennes - Saint Loup en Champagne | 2 | 2003 | 2003 |
| France - 51 Marne - Bazancourt | 7 | 1777 | 1901 |
| France - 51 Marne - Pomacle | 3 | 1676 | 1768 |
| LECLÈRE | France - 51 Marne - Avize | 1 | 1909 | 1909 |
| France - 51 Marne - Pomacle | 1 | 1793 | 1793 |
| France - 51 Marne - Reims | 1 | 1985 | 1985 |
| LECOINTRE | France - 51 Marne - Chamery | 1 | 1707 | 1707 |
| France - 51 Marne - Cumières | 1 | 1758 | 1758 |
| LEDIEU | France - 59 Nord - Saint-Hilaire-Lez-Cambrai | 1 | 1701 | 1766 |
| LEDOUBLE ou DOUBLOT | France - 51 Marne - Ay | 1 | 1698 | 1783 |
| LEDOUX | France - 08 Ardennes - Novion Porcien | 1 | 1933 | 1933 |
| France - 08 Ardennes - Saint Clément à Arnes | 1 | 1984 | 1984 |
| France - 08 Ardennes - Thugny-Trugny | 2 | 1726 | 1826 |
| France - 51 Marne - Bazancourt | 11 | 1712 | 1922 |
| France - 51 Marne - Beauséjour | 1 | 1915 | 1915 |
| France - 51 Marne - Fresne les Reims | 1 | 1838 | 1838 |
| France - 51 Marne - Pomacle | 11 | 1786 | 1911 |
| France - 51 Marne - Reims | 2 | 1940 | 2002 |
| France - 60 Oise - Compiène | 1 | 2019 | 2019 |
| France - 80 Somme - Villers Carbonnel | 2 | 1885 | 1887 |
| LEDUC | France - 08 Ardennes - Aire | 3 | 1666 | 1732 |
| France - 08 Ardennes - Blanzy | 1 | 1689 | 1689 |
| France - 08 Ardennes - Vieux les Asfeld | 1 | 1704 | 1745 |
| LEFAURE | France - 23 Creuse - Saint Martin Sainte Catherine | 1 | 1732 | 1732 |
| LEFBEVRE | France - 08 Ardennes - L'Ecaille | 1 | 1794 | 1794 |
| LEFEBVRE | France - 08 Ardennes - L'Ecaille | 4 | 1696 | 1827 |
| LEFEVRE | France - 08 Ardennes - Avançon | 1 | 1685 | 1745 |
| France - 51 Marne - Chamery | 1 | 1707 | 1707 |
| France - 51 Marne - Cumières | 2 | 1709 | 1779 |
| France - 51 Marne - Damery | 1 | 1736 | 1736 |
| France - 51 Marne - Merfy | 1 | 1799 | 1887 |
| LEFÉVRE | France - 02 Aisne - La Malmaison | 1 | 1899 | 1919 |
| LEFRANC | France - 51 Marne - Auménancourt le Petit | 3 | 1686 | 1715 |
| France - 51 Marne - Saint Étienne sur Suippe | 1 | 1752 | 1752 |
| LEGENDRE | France - 23 Creuse - Marsac | 1 | 1862 | 1914 |
| LEGER | France - 23 Creuse - Saint Goussaud | 3 | 1723 | 1800 |
| France - 51 Marne - Bazancourt | 1 | 1877 | 1877 |
| France - 51 Marne - Reims | 1 | 1859 | 1859 |
| LEGRAND | France - 02 Aisne - Mareuil en Dôle | 1 | 1691 | 1691 |
| France - 02 Aisne - Mennevret | 1 | 1718 | 1739 |
| France - 08 Ardennes - Saint Fergeux | 1 | 1714 | 1714 |
| France - 23 Creuse - Saint Pierre Cherignat | 1 | 1737 | 1748 |
| France - 59 Nord - Avesnes les Aubert | 1 | 1763 | 1763 |
| LEGROS | France - 08 Ardennes - Bergnicourt | 1 | 1836 | 1836 |
| France - 08 Ardennes - Saint Germainmont | 2 | 1797 | 1878 |
| France - 08 Ardennes - Saint Loup en Champagne | 1 | 1870 | 1870 |
| France - 51 Marne - Bazancourt | 3 | 1760 | 1826 |
| France - 51 Marne - Courtagnon | 1 | 1716 | 1740 |
| France - 51 Marne - Forestiere | 1 | 1668 | 1668 |
| France - 51 Marne - Saint Imoges | 1 | 1779 | 1779 |
| France - 51 Marne - Saint Martin d’Ablois | 1 | 1674 | 1693 |
| France - 51 Marne - Villers Franqueux | 3 | 1834 | 1858 |
| LEGUAY | France - 08 Ardennes - La Neuville en Tourne à Fuy | 1 | 1913 | 1913 |
| France - 08 Ardennes - La Neuville lès Wasigny | 1 | 1984 | 1984 |
| LEGUILLIER | France - 95 Val-d'Oise - Montmorency | 1 | 1746 | 1746 |
| LEJEUNE | France - 08 Ardennes - Mont Laurent | 1 | 1893 | 1893 |
| France - 08 Ardennes - Saint Germainmont | 3 | 1805 | 1870 |
| France - 23 Creuse - Saint Pierre Cherignat | 1 | 1754 | 1754 |
| France - 51 Marne - Reims | 1 | 1845 | 1866 |
| LELAURAIN | France - 02 Aisne - Laon | 1 | 1874 | 1874 |
| France - 51 Marne - Les Mesneux | 1 | 1847 | 1847 |
| LELAURIN | France - 08 Ardennes - Aussonce | 1 | 1751 | 1788 |
| France - 08 Ardennes - La Neuville en Tourne à Fuy | 2 | 1784 | 1852 |
| France - 08 Ardennes - Ménil Annelles | 1 | 1745 | 1745 |
| France - 08 Ardennes - Seuil | 1 | 1783 | 1783 |
| LELOUP | France - 51 Marne - Ay | 1 | 1783 | 1832 |
| France - 55 Meuse - Bannoncourt | 2 | 1754 | 1764 |
| France - 55 Meuse - Saint Mihiel | 2 | 1728 | 1750 |
| France - 55 Meuse - Woël | 1 | 1766 | 1766 |
| LEMAIRE | France - 02 Aisne - Hary | 1 | 1894 | 1894 |
| France - 02 Aisne - Veslud | 1 | 1898 | 1898 |
| France - 08 Ardennes - Ambly Fleury | 1 | 1868 | 1868 |
| France - 08 Ardennes - Attigny | 1 | 1906 | 1906 |
| France - 08 Ardennes - Hauviné | 1 | 1921 | 1921 |
| France - 08 Ardennes - La Neuville lès Wasigny | 1 | 1891 | 1891 |
| France - 08 Ardennes - Launois sur Vence | 1 | 1890 | 1890 |
| France - 08 Ardennes - Rethel | 1 | 1950 | 1950 |
| France - 08 Ardennes - Terron sur Aisne | 1 | 1901 | 1901 |
| France - 08 Ardennes - Vandy | 1 | 1902 | 1902 |
| France - 51 Marne - Bétheniville | 1 | 1948 | 1948 |
| France - 51 Marne - Reims | 1 | 2003 | 2003 |
| France - 51 Marne - Sainte Menehould | 1 | 1896 | 1896 |
| LEMAITRE | France - 08 Ardennes - Aussonce | 1 | 1732 | 1732 |
| France - 23 Creuse - Grand Bourg | 1 | 1851 | 1851 |
| France - 23 Creuse - Marsac | 1 | 1881 | 1881 |
| LEMIRE | France - 51 Marne - Reims | 1 | 1681 | 1713 |
| LEMOINE | France - 08 Ardennes - Rethel | 1 | 2008 | 2008 |
| France - 08 Ardennes - Saint Loup en Champagne | 5 | 1864 | 1974 |
| France - 51 Marne - Reims | 2 | 2002 | 2002 |
| France - 59 Nord - Catillon sur Sambre | 2 | 1871 | 1901 |
| France - 59 Nord - La Groise,Hauts-de-France | 1 | 1903 | 1903 |
| pomerieul | 1 | 1900 | 1900 |
| LEMONNIER | France - 75 Paris - Paris 20 | 1 | 1863 | 1863 |
| LEMOUSSU | France - 51 Marne - Saint Thierry | 3 | 1785 | 1854 |
| LENFANT | France - 02 Aisne - Caulaincourt | 2 | 1889 | 1892 |
| France - 02 Aisne - Mareuil en Dôle | 1 | 1902 | 1902 |
| France - 80 Somme - Péronne | 1 | 1964 | 1964 |
| France - Eaubonne,Seine et Oise | 1 | 1969 | 1969 |
| LENICE | France - 08 Ardennes - Saint Fergeux | 2 | 1680 | 1752 |
| LÉONARD | France - 39 Jura - Dôle | 1 | 1810 | 1810 |
| France - 51 Marne - Vitry le François | 1 | 1856 | 1856 |
| LEPAGE | France - 80 Somme - Bernes | 1 | 1883 | 1883 |
| France - 80 Somme - Vraignes en Vermandois | 1 | 1904 | 1904 |
| LEPAGNOL | France - 08 Ardennes - Avaux | 1 | 1705 | 1732 |
| France - 08 Ardennes - Vieux les Asfeld | 3 | 1738 | 1811 |
| France - 51 Marne - Brimont | 1 | ? | ? |
| LEPARGNEUR | France - 08 Ardennes - Juniville | 1 | 1811 | 1842 |
| France - 08 Ardennes - La Neuville en Tourne à Fuy | 1 | 1820 | 1820 |
| LÉPICIER | France - 51 Marne - Pourcy | 1 | 1732 | 1732 |
| France - 51 Marne - Saint Imoges | 6 | 1770 | 1778 |
| LEPINOIS | France - 08 Ardennes - Bégny | 1 | 1761 | 1761 |
| France - 08 Ardennes - La Romagne | 5 | 1694 | 1808 |
| LEQUEUX | France - 51 Marne - Reims | 1 | 1898 | 1898 |
| France - 51 Marne - Romain | 1 | 1901 | 1901 |
| France - 51 Marne - Ventelay | 1 | 1923 | 1929 |
| France - 51 Marne - Verneuil | 1 | 1873 | 1873 |
| LERICHE | France - 08 Ardennes - Sorbon | 1 | 1845 | 1872 |
| LEROUGE | France - 08 Ardennes - Issancourt et Rumel | 1 | 1839 | 1865 |
| France - 08 Ardennes - Saint Loup en Champagne | 1 | 1915 | 1915 |
| France - 08 Ardennes - Vivier au Court | 1 | 1896 | 1896 |
| France - 80 Somme - Albert | 1 | 1990 | 1990 |
| LEROUX | France - 02 Aisne - Mareuil en Dôle | 1 | 1643 | 1708 |
| LEROY | France - 08 Ardennes - Justine | 1 | 1907 | 1929 |
| France - 08 Ardennes - Saint Germainmont | 1 | 1790 | 1790 |
| France - 08 Ardennes - Saint Loup en Champagne | 1 | 1853 | 1853 |
| France - 51 Marne - Forestiere | 1 | 1668 | 1668 |
| France - 51 Marne - Reims | 1 | 1976 | 1976 |
| France - 51 Marne - Sermiers | 1 | 1816 | 1857 |
| LERY | France - 23 Creuse - Saint Martin Sainte Catherine | 1 | 1779 | 1779 |
| LESAGE | France - 80 Somme - Vraignes en Vermandois | 1 | 1890 | 1890 |
| LESARTHE | France - 23 Creuse - Dun le Palestel | 1 | 1885 | 1885 |
| LESARTRE | France - 23 Creuse - Dun le Palestel | 1 | 1869 | 1891 |
| LESGRET | France - 08 Ardennes - Saint Germainmont | 3 | 1786 | 1884 |
| LESIEUR | Belgique - NAM Namur - Alle | 1 | 1870 | 1870 |
| France - 08 Ardennes - Rimogne | 3 | 1793 | 1858 |
| France - 08 Ardennes - Vivier au Court | 1 | 1879 | 1879 |
| LESPAGNOL | France - 08 Ardennes - Aussonce | 1 | 1640 | 1678 |
| LESTE | France - 51 Marne - Venteuil | 4 | 1703 | 1815 |
| LETAU | France - 59 Nord - Saint Aubert | 1 | 1707 | 1724 |
| LETINOIS | France - 08 Ardennes - Saules Champenoise | 1 | 1924 | 1924 |
| LETONDEUR | France - 08 Ardennes - L'Ecaille | 1 | 1700 | 1743 |
| lettré | France - 51 Marne - Montmort | 2 | 1866 | 1866 |
| France - 51 Marne - Reims | 1 | 1887 | 1887 |
| LHERMINE | France - 51 Marne - Damery | 1 | 1853 | 1890 |
| LHOTELAIN | France - 51 Marne - Reims | 1 | 1985 | 1985 |
| France - 51 Marne - Warmeriville | 1 | 1940 | 1940 |
| France - 51 Marne - Épernay | 1 | 1916 | 1916 |
| LHOTTE | France - 51 Marne - Hermonville | 1 | 1845 | 1845 |
| France - 51 Marne - Loivre | 1 | 1872 | 1872 |
| France - 51 Marne - Pouillon | 1 | 1862 | 1862 |
| LIBERT | Belgique - NVL Brabant Wallon - Thorembais les Béguines | 1 | 1825 | 1825 |
| Belgique - NVL Brabant Wallon - Wastinnes | 1 | 1800 | 1800 |
| LIEBERT | France - 08 Ardennes - Vieux les Asfeld | 4 | 1700 | 1819 |
| LIENARD | France - 51 Marne - Damery | 1 | 1830 | 1857 |
| LIESCH | France - 08 Ardennes - Leffincourt | 1 | 1943 | 1943 |
| France - 08 Ardennes - Rethel | 1 | 2007 | 2007 |
| France - 08 Ardennes - Saint Loup en Champagne | 1 | ? | ? |
| France - 35 Ille-et-vilaine - Saint-Servan | 1 | 1917 | 1917 |
| France - 51 Marne - Pontfaverger-Moronvilliers | 1 | 1975 | 1975 |
| France - 51 Marne - Puisieulx | 3 | 1888 | 1890 |
| France - 51 Marne - Reims | 2 | 1950 | 2001 |
| France - 51 Marne - Sommesous | 1 | 1918 | 1918 |
| France - 51 Marne - Warmeriville | 7 | 1914 | 1979 |
| France - 76 Seine-Maritime - Rouen | 1 | 2024 | 2024 |
| Luxembourg - 038 Flaxweiler | 1 | 1861 | 1861 |
| Luxembourg - Gostingen | 2 | 1835 | 1902 |
| LILBERT | France - 51 Marne - Juvigny | 1 | 1774 | 1805 |
| LIMOUSIN | France - 87 Haute-Vienne - Saint Léonard de Noblat | 1 | 1867 | 1892 |
| LINGUET | France - 08 Ardennes - Aussonce | 1 | 1967 | 1967 |
| France - 08 Ardennes - Bergnicourt | 1 | 1791 | 1813 |
| France - 08 Ardennes - Blanzy-la-Salonnaise | 1 | 1919 | 1939 |
| France - 08 Ardennes - Gomont | 1 | 1902 | 1902 |
| France - 08 Ardennes - L'Ecaille | 3 | 1808 | 1828 |
| France - 08 Ardennes - Rethel | 1 | 2005 | 2005 |
| France - 08 Ardennes - Roizy | 1 | 1782 | 1782 |
| France - 08 Ardennes - Saint Remy le Petit | 5 | 1841 | 1892 |
| France - 51 Marne - Reims | 1 | 1966 | 1966 |
| LIVERNAUX | France - 51 Marne - Hermonville | 2 | 1807 | 1815 |
| France - 51 Marne - Pouillon | 2 | 1822 | 1835 |