1836
L Surnames
| Surname | First Name | County | Page |
| Labatt | M. | Dubuque | 33 |
| Labrieve | Antwine | Dubuque | 12 |
| Lacy | Iva | Dubuque | 21 |
| Ladd | Christopher | Demoine | 77 |
| Laflesh | John | Dubuque | 34 |
| Lamasters | Robert | Dubuque | 21 |
| Lamb | Evan T. | Demoine | 86 |
| Lamb | James | Demoine | 72 |
| Lamme | William | Demoine | 85 |
| Land | Richard | Demoine | 51 |
| Landers | Henry | Dubuque | 32 |
| Lane | Asa | Demoine | 87 |
| lane | M.J. | Dubuque | 41 |
| Lang | John | Dubuque | 22 |
| Langley | Robert | Dubuque | 18 |
| Langley | Robert | Dubuque | 30 |
| Langworthy | James L. | Dubuque | 36 |
| Langworthy | L.A. | Dubuque | 21 |
| Langworthy | Stephen | Dubuque | 24 |
| Lapage | B. | Dubuque | 12 |
| Lapointe | Bapt. D. Antel | Dubuque | 45 |
| Lapointe | M. | Dubuque | 33 |
| Laport | Lewis | Dubuque | 35 |
| Larash | Mr. | Dubuque | 37 |
| Lardman | James | Demoine | 59 |
| Larkin | Elias M. | Demoine | 53 |
| Larkin | James | Dubuque | 36 |
| Larkin | Levi F. | Demoine | 53 |
| Larose | Costole | Dubuque | 45 |
| Larsek | B. | Dubuque | 23 |
| Larva | G. | Dubuque | 44 |
| Laswell | David | Demoine | 81 |
| Lathrop | Isaac | Demoine | 89 |
| Lathrop | Silas | Demoine | 89 |
| Latrouch | M. | Dubuque | 33 |
| Latta | Matthew | Demoine | 77 |
| Latta | William | Demoine | 77 |
| Laughlin | John | Demoine | 79 |
| Lawless | B.B. | Dubuque | 34 |
| Lear | P.M. | Dubuque | 40 |
| Ledly | William | Demoine | 61 |
| Lee | Charles | Demoine | 87 |
| Lee | Elias | Demoine | 80 |
| Lee | Frederick | Demoine | 80 |
| Lee | Henry | Demoine | 86 |
| Lee | Hezekiah | Demoine | 80 |
| Lee | Robert W. | Demoine | 78 |
| Lee | William H. | Demoine | 78 |
| Leebrick | George | Demoine | 88 |
| Leekly | Mark | Dubuque | 22 |
| Leffler | Absolum | Demoine | 88 |
| Leffler | Isaac | Demoine | 88 |
| Lemon | Amos | Demoine | 59 |
| Lemon | S. | Dubuque | 38 |
| Lester | William | Demoine | 23 |
| Letcher | A. | Dubuque | 41 |
| Levi | Alexander | Dubuque | 14 |
| Levi | John | Dubuque | 23 |
| Leviray | Joseph | Dubuque | 11 |
| Lewin | John A. | Demoine | 87 |
| Lewis | Charles | Demoine | 62 |
| Lewis | James | Demoine | 53 |
| Lewis | Ser. | Dubuque | 38 |
| Lewis | Warner | Dubuque | 15 |
| Lewis | Washington | Demoine | 65 |
| Lewis | William | Demoine | 92 |
| Lightfoot | Francis | Demoine | 81 |
| Lightfoot | Washington | Demoine | 81 |
| Lile | Henry | Demoine | 70 |
| Lingo | William | Demoine | 90 |
| Litch | J.H. | Dubuque | 41 |
| Littleton | Robert | Demoine | 70 |
| Livingston | Hugh | Dubuque | 34 |
| Loar | Antwine | Dubuque | 29 |
| Lockwood | E. | Dubuque | 15 |
| Loclair | Michael | Dubuque | 44 |
| Logan | John | Demoine | 84 |
| Londary | John | Dubuque | 38 |
| Londra | F. | Dubuque | 44 |
| Long | Casper | Dubuque | 24 |
| Loomis | M. | Dubuque | 33 |
| Loomis | M. - family- | Dubuque | 37 |
| Lorimier | P.A. | Dubuque | 21 |
| Lorton | J.L. | Demoine | 61 |
| Lorton | John | Demoine | 53 |
| Lory | Peter | Demoine | 58 |
| Love | J. | Dubuque | 36 |
| Low | E.N. | Demoine | 66 |
| Low | H. | Dubuque | 43 |
| Lowrty | Widow | Demoine | 70 |
| Lowry | M. | Dubuque | 38 |
| Lozier | George | Dubuque | 21 |
| Lucas | William | Demoine | 61 |
| Luck | L.P. | Dubuque | 35 |
| Ludy | Nicholas | Dubuque | 36 |
| Luister | William | Demoine | 78 |
| Lusk | William | Demoine | 75 |
| Lyon | F | Dubuque | 23 |
| Lytton | Smith | Dubuque | 16 |