| Gen | Horse Name | DoB | Sex | Registration | Sire | Dam |
|---|---|---|---|---|---|---|
| 0 | HAFRENA ROSINA | Not Recorded | Mare | WSB 10404 | DERWEN WELSH COMET | PENLAN BESS |
| 1 | DERWEN WELSH COMET | Not Recorded | Stallion | WSB 1925 | CAHN DAFYDD | DEWI ROSINA |
| 2 | CAHN DAFYDD | 1942 | Stallion | MATHRAFAL | GWENOGWEN | |
| 3 | MATHRAFAL | Not Recorded | Stallion | WSB 1629 | MAB-Y-BRENIN | POLL OF GOLFA |
| 4 | MAB-Y-BRENIN | Not Recorded | Stallion | WSB 1555 | MATHRAFAL BRENIN | HAFAN POLLY |
| 5 | MATHRAFAL BRENIN | Not Recorded | Stallion | WSB 873 | TROTTING RAILWAY II | GARNLYDAN DOLLY |
| 6 | TROTTING RAILWAY II | Not Recorded | Stallion | WSB 529 | No Record | No Record. |
| 7 | No Record | Not Recorded | Stallion |