| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 61 | Cacamwri | ArthurianLegend | Servant. | M | |
| 62 | Cador | ArthurianLegend | Nephew of Arthur. | M | |
| 63 | Cadwallon | ArthurianLegend | A seventh century king. | M | |
| 64 | Caerleon | ArthurianLegend | Name of a battle site. | M | |
| 65 | Cafall | ArthurianLegend | Arthur's dog. | M | |
| 66 | Cai | ArthurianLegend | Arthur's brother. | M | |
| 67 | Calibom | ArthurianLegend | Various names for Arthur's sword. | M | |
| 68 | Calibome | ArthurianLegend | Various names for Arthur's sword. | M | |
| 69 | Calibor | ArthurianLegend | Various names for Arthur's sword. | M | |
| 70 | Calibum | ArthurianLegend | Various names for Arthur's sword. | M | |
| 71 | Calibumus | ArthurianLegend | Various names for Arthur's sword. | M | |
| 72 | Calogrenant | ArthurianLegend | A knight. | M | |
| 73 | Camelon | ArthurianLegend | Site of Arthur's last battle. | M | |
| 74 | Camlann | ArthurianLegend | Site of Arthur's last battle. | M | |
| 75 | Caradawc | ArthurianLegend | Son of Bran. | M | |
| 76 | Caradoc | ArthurianLegend | Son of Bran. | M | |
| 77 | Carmelide | ArthurianLegend | Guinevere's father. | M | |
| 78 | Carrado | ArthurianLegend | A knight. | M | |
| 79 | Cath | ArthurianLegend | Name of a monster. | M | |
| 80 | Catterick | ArthurianLegend | Name of a battle. | M | |