| Name | Group | Language of Origin | Languages of Use | Meaning/Translation or Related Words | US 2021 |
|---|
| Angharad | Angharad | Welsh | Welsh | | |
| Bhreac | Bryce | Welsh | Scottish | speckled | |
| Bowen | Bowen | Welsh | English | Words: son | #367 |
| Branwen | Branwen | Welsh | English, Welsh | Words: white, fair, shining | |
| Breck | Bryce | Welsh | Irish | speckled | |
| Brice | Bryce | Welsh | French | speckled | |
| Brizio | Bryce | Welsh | Italian | speckled | |
| Bronwen | Bronwen | Welsh | English, Welsh | Words: white, fair, shining | |
| Bryce | Bryce | Welsh | English | speckled | #250 |
| Bryn | Brynn | Welsh | English | hill | |
| Brynn | Brynn | Welsh | English, Welsh | hill | #362 |
| Carew | Carew | Welsh | English | Words: castle, fortress | |
| Cari | Cari | Welsh | English, Welsh | love | |
| Carys | Cerys | Welsh | Welsh | love | |
| Cerys | Cerys | Welsh | English, Welsh | love | |
| Crew | Carew | Welsh | English | Words: castle, fortress | #266 |
| Crue | Carew | Welsh | English | Words: castle, fortress | |
| Deri | Deri | Welsh | Welsh | oaks | |
| Dillan | Dylan/Dylan | Welsh | English | sea | |
| Dillion | Dylan/Dylan | Welsh | English | sea | |
| Dillon | Dylan/Dylan | Welsh | English | sea | #669 |
| Dylan | Dylan/Dylan | Welsh | English | sea | #567 |
| Dylan | Dylan/Dylan | Welsh | German, English, Welsh | sea | #44 |
| Dylano | Dylan/Dylan | Welsh | Dutch | sea | |
| Dyllan | Dylan/Dylan | Welsh | English | sea | |
| Dylon | Dylan/Dylan | Welsh | English | sea | |
| Dzsenifer | Jennifer | Welsh | Hungarian | Words: white, fair, shining / smooth | |
| Ellis | Ellis | Welsh | English, Welsh | the kind | |
| Enid | Enid | Welsh | Welsh | soul | |
| Gareth | Gareth | Welsh | English, Welsh | | |
| Gauvain | Gavin | Welsh | French | white hawk | |
| Gaven | Gavin | Welsh | English | white hawk | |
| Gavin | Gavin | Welsh | English, Scottish, Welsh | white hawk | #173 |
| Gavyn | Gavin | Welsh | English | white hawk | |
| Gaynor | Jennifer | Welsh | English | Words: white, fair, shining / smooth | |
| Ginevra | Jennifer | Welsh | Italian | Words: white, fair, shining / smooth | |
| Glenda | Glenda | Welsh | German, Welsh | Words: clean, pure, holy / good | |
| Glenys | Glenys | Welsh | Welsh | Words: clean, pure, holy | |
| Glynis | Glenys | Welsh | Welsh | Words: clean, pure, holy | |
| Guendalina | Gwendolin | Welsh | Italian | white ring | |
| Guinevere | Jennifer | Welsh | English | Words: white, fair, shining / smooth | #964 |
| Gwen | Gwyneth | Welsh | English | maybe happiness | |
| Gwen | Gwendolin | Welsh | English | white ring | #854 |
| Gwenda | Gwendolin | Welsh | English | white ring | |
| Gwendolen | Gwendolin | Welsh | English, Welsh | white ring | |
| Gwendolin | Gwendolin | Welsh | German, English, Welsh | white ring | |
| Gwendoline | Gwendolin | Welsh | German, English, Welsh | white ring | |
| Gwendolyn | Gwendolin | Welsh | English, Welsh | white ring | #398 |
| Gwyneth | Gwyneth | Welsh | English, Welsh | maybe happiness | |
| Jena | Jennifer | Welsh | English | Words: white, fair, shining / smooth | |
| Jenifer | Jennifer | Welsh | German, English | Words: white, fair, shining / smooth | |
| Jennie | Jennifer | Welsh | English | Words: white, fair, shining / smooth | |
| Jennifer | Jennifer | Welsh | German, English | Words: white, fair, shining / smooth | #492 |
| Jennina | Jennifer | Welsh | English | Words: white, fair, shining / smooth | |
| Jenny | Jennifer | Welsh | German, English | Words: white, fair, shining / smooth | |
| Jennyfer | Jennifer | Welsh | German, English | Words: white, fair, shining / smooth | |
| Kimball | Kimball | Welsh | English | war chief | |
| Krew | Carew | Welsh | English | Words: castle, fortress | #624 |
| Lincoln | Lincoln | Welsh | English | lake colony | #45 |
| Maddox | Maddox | Welsh | English | son of Madoc | #174 |
| Maddux | Maddox | Welsh | English | son of Madoc | |
| Madoc | Madoc | Welsh | Welsh | maybe fortunate | |
| Maredudd | Maredudd | Welsh | Welsh | maybe lord of the sea | |
| Marvin | Marvin | Welsh | German, English | Words: marrow | #620 |
| Marwin | Marvin | Welsh | English | Words: marrow | |
| Medox | Maddox | Welsh | Hungarian | son of Madoc | |
| Meredith | Maredudd | Welsh | English | maybe lord of the sea | |
| Meredith | Meredith | Welsh | English | | #570 |
| Mervin | Marvin | Welsh | English | Words: marrow | |
| Owen | Owen | Welsh | English, Welsh | | #22 |
| Reanna | Rhian | Welsh | English | the maiden | |
| Reece | Reece/Reese/Reece | Welsh | English | ardor | |
| Reece | Reece/Reese/Reece | Welsh | English, Welsh | ardor | #579 |
| Rees | Reece/Reese/Reece | Welsh | English | ardor | |
| Reese | Reece/Reese/Reece | Welsh | English | ardor | #147 |
| Reese | Reece/Reese/Reece | Welsh | English | ardor | #701 |
| Rhian | Rhian | Welsh | Welsh | the maiden | |
| Rhianna | Rhian | Welsh | English | the maiden | |
| Rhonda | Rhonda | Welsh | English | good spear | |
| Rhys | Reece/Reese/Reece | Welsh | Welsh | ardor | #413 |
| Rianna | Rhian | Welsh | English | the maiden | |
| Rihanna | Rhian | Welsh | English | the maiden | |
| Ronda | Rhonda | Welsh | English | good spear | |
| Tegan | Tegan/Tegan | Welsh | English, Welsh | fair | |
| Tegan | Tegan/Tegan | Welsh | English | fair | |
| Trever | Trevor | Welsh | English | big village | |
| Trevor | Trevor | Welsh | English, Welsh | big village | #459 |
| Uther | Uther | Welsh | English, Welsh | maybe terrible | |
| Uthr | Uther | Welsh | English | maybe terrible | |
| Vaughan | Vaughan | Welsh | English, Welsh | small | |
| Vaughn | Vaughan | Welsh | English | small | |
