| Horse Name | DoB | Sex | Registration | Sire | Dam |
|---|---|---|---|---|---|
| DERWEN LLWYNOG | 1967 | Stallion | NEBO BLACK MAGIC | DERWEN ROSINA | |
| DERWEN ROSINA'S LAST | Not Recorded | Stallion | WSB 9786 | NEBO BLACK MAGIC | DERWEN ROSINA |
| DERWEN QUEEN | Not Recorded | Mare | WSB 29471 | HENDY BRENIN | DERWEN ROSINA |
| DERWEN DERYN DU | Not Recorded | Stallion | WSB 5464 | LLANARTH BRAINT | DERWEN ROSINA |
| DERWEN SEREN TELEDU | Not Recorded | Mare | WSB 25416 | PENTRE EIDDWEN COMET | DERWEN ROSINA |