| Broderick | Man | Welsh Names |
| Bronwen | Woman | Welsh Names |
| Bronwyn | Woman | Welsh Names |
| Brynn | Woman | Welsh Names |
| Buddug | Woman | Welsh Names |
| Cadell | Man | Welsh Names |
| Cadewyn | Unisex | Welsh Names |
| Cadfael | Man | Welsh Names |
| Cadfan | Man | Welsh Names |
| Cadogan | Man | Welsh Names |
| Caerwyn | Unisex | Welsh Names |
| Cai | Unisex | Welsh Names |
| Cambrie | Unisex | Welsh Names |
| Caradoc | Man | Welsh Names |
| Caraf | Woman | Welsh Names |
| Cari | Woman | Welsh Names |
| Cariad | Unisex | Welsh Names |
| Caron | Woman | Welsh Names |
| Carwyn | Man | Welsh Names |
| Carys | Woman | Welsh Names |