| Name | Relationship with Richard Barnard | Civil | Canon |
|---|
| Clark, Evan Justin | Half grandnephew | IV | 3 |
| Clark, Gail Marie | Half niece | III | 2 |
| Clark, Joan | Wife of the half nephew | | |
| Clark, Karle Nicole | Half grandnephew | IV | 3 |
| Clark, Linda Suzanne | Wife of the 1st cousin once removed | | |
| Clark, Pat | Half sister | II | 1 |
| Clark, Reese Allen | 4th cousin once removed | XI | 6 |
| Clark, Robert Loren | Half brother-in-law | | |
| Clark, Robert Loren, Jr. | Half nephew | III | 2 |
| Clark, Roney J. | Husband of the 4th cousin | | |
| Clark, Russell Tim | Half nephew | III | 2 |
| Clark, Timmothy Allen | Half grandnephew | IV | 3 |
| Clark, Tracy Lynn | Half grandniece | IV | 3 |
| Clark, Travis Loren | Half grandnephew | IV | 3 |
| Claudius, (---) | 58th great-grandfather | LX | 60 |
| Claudius, Tiberius | 67th great-grandfather | LXIX | 69 |
| Clerk, Joan | Wife of the 15th great-granduncle | | |
| CLERMONT (CREIL, MOUCHY), Hugh Count Of | 29th great-grandfather | XXXI | 31 |
| CLERMONT, Adeliza De | 28th great-grandmother | XXX | 30 |
| CLERMONT, Ermengardis De | 30th great-grandmother | XXXII | 32 |
| CLERMONT, Ermentrude Of | 28th great-grandaunt | XXXII | 31 |
| CLERMONT, Renaud De | 30th great-grandfather | XXXII | 32 |
| CLERMONT-EN-BEAUVAISIS, Renaud II Count Of | 28th great-granduncle | XXXII | 31 |
| Cloddien, Caradog ap | 33rd great-grandfather | XXXV | 35 |
| ClodemirIII, King Of The West FRANKS | 66th great-grandfather | LXVIII | 68 |
| ClodiusIII, King Of The FRANKS | 55th great-grandfather | LVII | 57 |
| ClodiusIV, King Of The FRANKS | 52nd great-granduncle | LVI | 55 |
| ClodomirIV, King Of The FRANKS | 60th great-grandfather | LXII | 62 |
| ClodomirIV, King Of The FRANKS | 52nd great-granduncle | LVI | 55 |
| Clower, Annie | Wife of the 1st cousin twice removed | | |
| Clydog, Seisyll ap | 32nd great-grandfather | XXXIV | 34 |
| Clydwyn, Clodri ap | 3rd cousin 32 times removed | XL | 36 |
| Clydwyn, Gwledyr ferch | 3rd cousin 32 times removed | XL | 36 |
| Cochiaid, Rhys "Goch" | 16th great-granduncle | XX | 19 |
| Coel, Ceneu ap | 1st cousin 35 times removed | XXXIX | 37 |
| Coel, Dyfrwr ap | 1st cousin 35 times removed | XXXIX | 37 |
| Coel, Garbanion ap | 1st cousin 35 times removed | XXXIX | 37 |
| Coel, Gwawl Ferch | 1st cousin 35 times removed | XXXIX | 37 |
| COEL, Gwawl Verch | 42nd great-grandmother | XLIV | 44 |
| Coel, Llywelyn "Eurdorchog" ap | 30th great-grandfather | XXXII | 32 |
| COFFIN | 7th great-granduncle | XI | 10 |
| COFFIN (COFFYN), Nickolas (Nicholas) | 9th great-grandfather | XI | 11 |
| COFFIN(LOGAN), Lydia | 5th great-grandaunt | IX | 8 |
| COFFIN, Abigail | 6th great-grandmother | VIII | 8 |
| COFFIN, Alice | 12th great-grandaunt | XVI | 15 |
| COFFIN, Alice | 12th great-grandaunt | XVI | 15 |
| COFFIN, Alice | 12th great-grandaunt | XVI | 15 |
| COFFIN, Alice Margaret | 12th great-grandaunt | XVI | 15 |
| COFFIN, Alice Margaret | 12th great-grandaunt | XVI | 15 |
| COFFIN, Ann | 8th great-grandaunt | XII | 11 |