| Name | Relationship with Wendy Libby | Civil | Canon |
|---|
| Ingersoll, Laura Luselle | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lawrence D. | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lawrence Russell | 8th cousin | XVIII | 9 |
| Ingersoll, Lelah K. | 7th cousin twice removed | XVIII | 10 |
| Ingersoll, Leland L. | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lelia M. | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Lena Belle | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lena M. | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lena Ma | 1st cousin twice removed | VI | 4 |
| Ingersoll, Lenora Harris | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Leo | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Leona | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Leonard Elbert | 6th cousin 3 times removed | XVII | 10 |
| Ingersoll, Leroy Abram | 8th cousin twice removed | XX | 11 |
| Ingersoll, Lester | 5th cousin 3 times removed | XV | 9 |
| Ingersoll, Levi Wass | 4th cousin 5 times removed | XV | 10 |
| Ingersoll, Lewis | 4th cousin 4 times removed | XIV | 9 |
| Ingersoll, Lewis Elvin | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lewis Melvin | 7th cousin 3 times removed | XIX | 11 |
| Ingersoll, Lewis Oren | 6th cousin twice removed | XVI | 9 |
| Ingersoll, Lillian | 7th cousin twice removed | XVIII | 10 |
| Ingersoll, Lillie | 6th cousin 3 times removed | XVII | 10 |
| Ingersoll, Lillie Wallis | 5th cousin 3 times removed | XV | 9 |
| Ingersoll, Lizzie W. | 4th cousin 4 times removed | XIV | 9 |
| Ingersoll, Loas | 4th cousin 6 times removed | XVI | 11 |
| Ingersoll, Lois | 5th great-grandaunt | IX | 8 |
| Ingersoll, Lomhamah | 4th cousin 5 times removed | XV | 10 |
| Ingersoll, Lora | 5th cousin 5 times removed | XVII | 11 |
| Ingersoll, Lorenzo Porter | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Lorenzo Will | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Louis | 4th cousin 3 times removed | XIII | 8 |
| Ingersoll, Louisa | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Louisa | 6th cousin 4 times removed | XVIII | 11 |
| Ingersoll, Louisa A. | 7th cousin twice removed | XVIII | 10 |
| Ingersoll, Louisa May | 7th cousin twice removed | XVIII | 10 |
| Ingersoll, Louise M. | 6th cousin 4 times removed | XVIII | 11 |
| Ingersoll, Lovias Fillmore | 5th cousin 3 times removed | XV | 9 |
| Ingersoll, Loviea | 5th cousin 3 times removed | XV | 9 |
| Ingersoll, Lovilla Wass | 6th cousin 3 times removed | XVII | 10 |
| Ingersoll, Lowell Francis | 5th cousin 3 times removed | XV | 9 |
| Ingersoll, Lucy | 3rd cousin 6 times removed | XIV | 10 |
| Ingersoll, Lucy | 2nd cousin 6 times removed | XII | 9 |
| Ingersoll, Lucy | 1st cousin 7 times removed | XI | 9 |
| Ingersoll, Lucy Anderson | 6th cousin 4 times removed | XVIII | 11 |
| Ingersoll, Lucy Emma | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Lucy Evelyn | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Lucy Maria | 7th cousin 3 times removed | XIX | 11 |
| Ingersoll, Lucy R. | 5th cousin 4 times removed | XVI | 10 |
| Ingersoll, Luman | 6th cousin 4 times removed | XVIII | 11 |
| Ingersoll, Luther | 4th cousin 5 times removed | XV | 10 |
