| Name | Birth date | Relationship with Robert Frei |
|---|
| Cassalette, Marguerite | | 8th great-grandmother of the wife |
| Castanier, Bernard | Private | Husband of the 1st cousin once removed |
| Castanier, Jason | 24 Apr 1973 | 2nd cousin |
| Casteel, Corinne Ann | Private | 2nd cousin of the wife |
| Casteel, Holly Nicole | Private | 2nd cousin once removed of the wife |
| Casteel, Kathryn Rose | Private | 2nd cousin once removed of the wife |
| Casteel, Kevin | Private | 2nd cousin of the wife |
| Casteel, Phillip Lee Jr. | Private | 2nd cousin of the wife |
| Casteel, Phyliss Kay | 19 Oct 1959 | 2nd cousin of the wife |
| Catharine | Abt. 1767 | 5th great-grandmother |
| Catrice | Private | 3rd cousin |
| Caughlin, Elizabeth Marie | Private | 2nd cousin once removed of the wife |
| Caughlin, Krista Anne | Private | 2nd cousin once removed of the wife |
| Caughlin, Sean Timothy | Private | 2nd cousin once removed of the wife |
| Celezic, Jean Marie | Private | 3rd cousin |
| Celezic, Marguerite Ann (Peggy) | Private | 3rd cousin |
| Celezic, Matthew | Private | Husband of the 2nd cousin once removed |
| Chapoton, Jean Baptiste | | 6th great-grandfather of the wife |
| Chapoton, Mary Charlotte Charles | | 5th great-grandmother of the wife |
| Chase, Louise Francis | Private | Wife of the 1st cousin twice removed |
| Chauvin, Marie Marthe | 17 Jan 1661/62 | 7th great-grandmother of the wife |
| Chauvin, Pierre | 17 May 1635 | 8th great-grandfather of the wife |
| Chauvin, Rene | | 9th great-grandfather of the wife |
| Chenay, Marie Madeleine | 22 Sep 1658 | 6th great-grandmother of the wife |
| Cherry, Carol (Alice Carol) | Private | 1st cousin once removed |
| Cherry, John | 24 Jun 1915 | Husband of the grandaunt |
| Chesné, Nicolas | | 8th great-grandfather of the wife |
| Chesney, Gary James | Private | 3rd cousin twice removed of the wife |
| Chesney, Kayla Marie | Private | 3rd cousin twice removed of the wife |
| Chesnut, Lucille Gladys | Private | Wife of the 4th cousin twice removed |
| Chris | Private | Wife of the half 2nd cousin |
| Chrishanne, Bonnie | Private | Wife of the 1st cousin once removed |
| Church, John | Abt. 1641 | Husband of the 8th great-grandaunt |
| Cilk, Richard James | Private | Husband of the 1st cousin once removed |
| Clara | Private | 1st cousin twice removed |
| Clark, Christopher | Private | Husband of the 2nd cousin once removed |
| Clark, Holly | Private | Wife of the 2nd cousin |
| Clark, Judson | Private | 4th cousin once removed of the wife |
| Clark, Nancy Ann | Abt. 1757 | 5th great-grandmother |
| Clark, Patrick | Private | 4th cousin once removed of the wife |
| Clarke, Charles | | 3rd cousin 5 times removed of the wife |
| Clarke, Elizabeth | | 3rd cousin 5 times removed of the wife |
| Clarke, Enoch | | 3rd cousin 5 times removed of the wife |
| Clarke, Jemima | | 3rd cousin 5 times removed of the wife |
| Clarke, Mary | | 3rd cousin 5 times removed of the wife |
| Clarke, Smith | | 3rd cousin 5 times removed of the wife |
| Clarke, William | | 3rd cousin 5 times removed of the wife |
| Clay, Cynthia Louise | Private | 4th cousin once removed of the wife |
| Clay, Katherine Irene | Private | 4th cousin once removed of the wife |
| Clayton, Euphemia | 21 Jan 1818 | Wife of the 1st cousin 5 times removed |
