Twyford Thunder
Stamböcker
- Welsh Mountain Holland - STB-A STB-A 139
- Welsh Pony Stud Book - WSB WSB 4186
Stamtavla
Avkomma
| Namn | Ras | Kön | Född |
|---|---|---|---|
| Rondeels Caron | Welsh Mountain | Hingst | |
| Rondeels Gerlofke | Welsh Mountain | Sto | |
| Rondeels Pengwyn | Welsh Mountain | Hingst | 1966 |
| Rondeels Cerdin | Welsh Mountain | Hingst | 1967 |
| Rondeels Sabyon | Welsh Mountain | Hingst | 1970 |
| Rondeels Careaway | Welsh Mountain | Hingst | 1971-04-10 |
| Rondeels Cavalla | Welsh Mountain | Sto | 1972 |
| Rober | Welsh Mountain | Hingst | 1979 |
| Landmanslust's Bettie | Welshponny | Sto | 1983 |
| Langen Voren Carlo | Welsh Mountain | Hingst | 1984 |