| Nome | Sginificados | Sexo | Origem |
|---|---|---|---|
| Gareth | one of King Arthur's knights | Menino | Welsh |
| Gavin | one of King Arthur's knights | Menino | Welsh |
| Gladys | form of CLAUDIA - lame | Menina | Welsh |
| Goleu | light, bright (an early saint) | Menina | Welsh |
| Goleudydd | bright day | Menina | Welsh |
| Griffin | strong lord | Menino | Welsh |
| Guinevere | form of GWENHWYFAR - fair spirit | Menina | Welsh |
| Gwawr | dawn (an early saint) | Menina | Welsh |
| Gwen | fair, white | Menina | Welsh |
| Gwenddydd | fair day - in legend, the sister of Merlin | Menina | Welsh |
| Gwenhwyfar | fair spirit | Menina | Welsh |
| Gwenllian | fair flood | Menina | Welsh |
| Gwennor | form of GWENHWYFAR - fair spirit | Menina | Welsh |
| Gwyneth | uncertain, possibly from the placename Gwynedd | Menina | Welsh |