Breeder: T. J. Gwyn Price, Sennybridge, Wales
Born: 1971
Dyrin Seren Wen came to Sumrin in 1972, directly from her breeder. As a youngster, she won several prizes, such as best three year old at the regional show in Deurne, 1974. She was by the popular stallion Brierwood Goldleaf, who even sired ponies at Coed Coch stud. Her dam is the renowned Cwmowen Nutshell, also mother of Dyrin Martini and Dyrin Honeysuckle. Interesting enough, her breeder told us that Dyrin Tina would be the better show mare, but Dyrin Seren Wen would be the better breeding mare. History proved him wrong, but still Dyrin Seren Wen proved a good breeder, as she left the premium stallion Sumrin Sunstar and a couple of nice daughters, which awarded her the preferent predicate for the NWPCS. Seren Wen also got the ster predicate with the NWPCS and she did the IBOP performance test and concluded this with an "A" premium.
Dyrin Seren Wen had the following foals at Sumrin:
| 1974 | Sumrin Sapphire | by | Dyrin Quicksilver |
| 1975 | Sumrin Senator | by | Dyrin Quicksilver |
| 1976 | Sumrin Sunstar | by | Vardra Julius |
| 1977 | Sumrin Smaragd | by | Leith Popover |
| 1978 | Sumrin Saturnus | by | Vardra Julius |
| 1979 | Sumrin Sirius | by | Vardra Julius |
| 1980 | Sumrin Sorella | by | Coed Coch Olfyr |
| 1982 | Sumrin Star of Hope | by | Vardra Julius |
| Dyrin Seren Wen | Brierwood Goldleaf |
Brierwood Popwood |
Brierwood Whiteking | Criban Historical |
| Criban Ensa | ||||
| Brierwood Lolipop | Brierwood Mistwyn | |||
| Barley Sugar | ||||
| Brierwood Bayleaf | Wentworth Mentor | Coed Coch Glyndwr | ||
| Wentworth Silver Minnow | ||||
| Brierwood Treacle | Dragon | |||
| Barley Sugar | ||||
| Cwmowen Nutshell | Dyrin Athlete | Criban Cockade | Ness Commander | |
| Criban Socks | ||||
| Dyrin Princess | Revel Wampus | |||
| Criban Cosy | ||||
| Cwmowen Lady | Forest Blue Banner | Forest Blue Squire | ||
| Forest Nell Black Swell | ||||
| Cwmowen Young Cream Nellie | Black Dick | |||
| Cwmowen Nellie |