| Name | Relationship with Wendy Libby | Civil | Canon |
|---|
| Collis, Mary | Wife of the 1st cousin 7 times removed | | |
| Colman, James | Husband of the 2nd cousin 6 times removed | | |
| Combs, Mary | Wife of the 1st cousin 9 times removed | | |
| Comerford, Henry | Husband of the 1st cousin 7 times removed | | |
| Comerford, William | 2nd cousin 6 times removed | XII | 9 |
| Comstock, Daisy | 6th cousin twice removed | XVI | 9 |
| Comstock, Duke | 6th cousin twice removed | XVI | 9 |
| Comstock, Emerson | Husband of the 5th cousin 3 times removed | | |
| Comstock, Grace | 6th cousin twice removed | XVI | 9 |
| Comstock, Herbert | 6th cousin twice removed | XVI | 9 |
| Conover, Martha A. | Wife of the 5th cousin 4 times removed | | |
| Cooper, Alice Girdler | 3rd cousin 4 times removed | XII | 8 |
| Cooper, Charles Ingersoll | 7th cousin 3 times removed | XIX | 11 |
| Cooper, Charles Wendell | 3rd cousin 4 times removed | XII | 8 |
| Cooper, Elizabeth Savage | 3rd cousin 4 times removed | XII | 8 |
| Cooper, Halsey Fenimore | Husband of the 6th cousin 4 times removed | | |
| Cooper, Halsey Fenimore | 7th cousin 3 times removed | XIX | 11 |
| Cooper, Harriet | 7th cousin 3 times removed | XIX | 11 |
| Cooper, Harriet Savage | 3rd cousin 4 times removed | XII | 8 |
| Cooper, James Ingersoll | 3rd cousin 4 times removed | XII | 8 |
| Cooper, James Sullivan | Husband of the 2nd cousin 5 times removed | | |
| Cooper, James Sullivan | Husband of the 2nd cousin 5 times removed | | |
| Cooper, Mary | 7th cousin 3 times removed | XIX | 11 |
| Cooper, Mary Ingersoll | 3rd cousin 4 times removed | XII | 8 |
| Cooper, Wiliam Savage | 3rd cousin 4 times removed | XII | 8 |
| Cotten, Albert | Husband of the 5th cousin 4 times removed | | |
| Cotton, Mary | Wife of the 1st cousin 3 times removed | | |
| Cox, George | Husband of the 2nd cousin 8 times removed | | |
| Cox, John | 3rd cousin 7 times removed | XV | 11 |
| Cram, Adrian Charles | 2nd cousin | VI | 3 |
| Cram, Bernie | 1st cousin once removed | V | 3 |
| Cram, Bertha D. | Great-grandaunt | V | 4 |
| Cram, Bertha Ella | Grandaunt | IV | 3 |
| Cram, Beulah Minta | Grandmother | II | 2 |
| Cram, Bobby | 2nd cousin | VI | 3 |
| Cram, Bonnie | 1st cousin once removed | V | 3 |
| Cram, Charles Dennis | Granduncle | IV | 3 |
| Cram, Chester | 1st cousin once removed | V | 3 |
| Cram, Christopher Joseph | 1st cousin once removed | V | 3 |
| Cram, Chuckie | 2nd cousin | VI | 3 |
| Cram, David Charles | 1st cousin once removed | V | 3 |
| Cram, Dennis W. | 1st cousin once removed | V | 3 |
| Cram, Donald E. | 1st cousin once removed | V | 3 |
| Cram, Edith Etta | Grandaunt | IV | 3 |
| Cram, Eileen Marie | 1st cousin once removed | V | 3 |
| Cram, Elsie Vera | Grandaunt | IV | 3 |
| Cram, Emma | 2nd cousin | VI | 3 |
| Cram, Esther May | Grandaunt | IV | 3 |
| Cram, Frank W. | Great-grandfather | III | 3 |
| Cram, Herbert Edward Magness | Granduncle | IV | 3 |
