| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Brangwen | Welsh | Dark and pure. | F | |
| 42 | Brangwy | Welsh | Dark and pure. | F | |
| 43 | Branwen | Welsh | Beautiful raven. Branwen was heroine of one of the tales of the Mabinogion. | F | |
| 44 | Branwenn | Welsh | Dark and pure. | F | |
| 45 | Branwyn | Welsh | White-breasted. | F | |
| 46 | Bregus | Welsh | Frail. | F | |
| 47 | Briallan | Welsh | Primrose. | F | |
| 48 | Bronwen | Welsh | Dark and pure. White breast, white breasted. | F | |
| 49 | Bronwyn | Welsh | Dark and pure. White breast, white breasted. | F | |
| 50 | Buddug | Welsh | Welsh form of Victoria: victory. | F | |
| 51 | Cadi | Welsh | Pure. | F | |
| 52 | Cadwyn | Welsh | Chain. | F | |
| 53 | Caethes | Welsh | Slave. | F | |
| 54 | Cafell | Welsh | Oracle. | F | |
| 55 | Caniad | Welsh | Song. | F | |
| 56 | Caryl | Welsh | Variant of Carys: Love. | F | |
| 57 | Carys | Welsh | Love. | F | |
| 58 | Cath | Welsh | Cat. | F | |
| 59 | Catrin | Welsh | Pure, clear. A Welsh variant of 'Catherine', which is a French form of the Latin 'Katharina', from the Greek Aikaterina'. | F | |
| 60 | Ccri | Welsh | Loved one. | F | |