| Text: | Yn y dyfroedd mawr a'r tonnau (In the foaming waves and waters) |
| Author (stanza 2): | T. C. |
| Author (stanzas 1, 3): | D. W. |
| Translator: | D. H. |
| Tune: | GWYNFA |
| Composer: | J. H. Roberts |
| Text Information | |
|---|---|
| First Line: | Yn y dyfroedd mawr a'r tonnau (In the foaming waves and waters) |
| Author (stanzas 1, 3): | D. W. |
| Author (stanza 2): | T. C. |
| Translator: | D. H. |
| Language: | English; Welsh |
| Publication Date: | 1952 |
| Tune Information | |
|---|---|
| Name: | GWYNFA |
| Composer: | J. H. Roberts |
| Meter: | 8.7.8.7. D. |
| Key: | e minor |