| Samuel W. LACHLAND (1744-????) | & | unknown (????-????) |
| William [Lauchline] LACHLAND (1720-????) | & | Jane COOK (1720-????) |
| Edward LAFAYETTE (1847-1925) | & | Louisa HART (1854-1920) |
| Joseph LaFRANCE (1858-1937) | & | Emma P. WEEDMARK (1859-1933) |
| Peter LAHR (1844-1936) | & | Margaret MARBACH (????-????) |
| Hosea LAMB (1811-1894) | & | Mary Jane DEARBORNE (1817-1855) |
| William Fitch LAMB (1843-1926) | & | Sarah Ann CHURCHILL (1848-1925) |
| Daniel LAMPHIER (1835-1921) | & | Anna McDONALD (1835-1921) |
| LAMPLOUGH (????-????) | & | Georgeiana GREAVES (1832-1918) |
| Gustave LANGE (1856-1939) | & | Ottillie PRIEBE (1860-1933) |
| James LANIGAN (1833-1899) | & | Mary DAVIS (1834-1901) |
| John LANIGAN (1828-1880) | & | Mary BURNS (1835-1909) |
| John LARSON (1836-1888) | & | Helga HANSDATTER (1832-1886) |
| Lars Peter Victor LARSON (1846-1926) | & | Hilda Maria A JOHNSON (1856-1936) |
| William L. LASSLEY (1675-1740) | & | Martha ALEXANDER (1680-1742) |
| Filippo LEONI (????-1875) | & | Liberata MINETTI (????-1899) |
| John F LEPISTO (1871-1921) | & | Aliina KOIVUMAKI (1872-1933) |
| John O. LINDBLOM (1834-????) | & | Helena DANIELSDOTTER (1838-1895) |
| Jonas LINN (1830-1897) | & | Carrie CARLSON (1832-1898) |
| John LITT (1808-1879) | & | Clara YOUNG (1) (1812-1873) |
| Greenbury LIVINGOOD (1821-1898) | & | Abigail Blossom EWING (1822-1906) |
| Charles LLOYD (1613-1657) | & | Elizabeth STANLEY (????-????) |
| Thomas LLOYD (1641-1694) | & | Mary JONES (1644-1683) |
| John Francis LOCK (1849-1941) | & | Ellen Ann CHISSELL (1846-1930) |
| William LOCK (1822-1901) | & | Mary BOAG (1817-1914) |
| Giuseppe Bautista LOERO (1840-????) | & | Angela Maria GHIO (1843-????) |
| Zigmund LOKE (????-????) | & | Julia VAIROLI (????-????) |
| David B. LONG (1833-1906) | & | Elizabeth ATKINS (1840-1915) |
| George LONG (1845-1889) | & | Mary Ann FERGUSON (1839-1919) |
| William James LONG (1849-1932) | & | Eva May ANDREWS (1852-1891) |
| William James LONG (1849-1932) | & | Lilly A. WILSON (1875-1926) |
| Carolus Ludovicus LOOTENS (1872-1945) | & | Leonie Marie MARTENS (1873-1941) |
| Louis LUDWIG (1833-1904) | & | Katharina Elisabetha DIPPEL (1847-1919) |
| Frank Jacob LULEY (1830-1913) | & | Margaret HUHN (1836-1922) |
| Franz Xaver LUSCH (1802-1865) | & | Viktoria SPRAUER (1802-1832) |
| Franz Xaver LUSCH (1802-1865) | & | Maria Magdalena SCHUH (1810-1889) |