| Cuhelyn ap Ifor of Builth Lord of Builth (~0907 - ) |
Einion ap Owain of S. Wales Prince of South Wales (~0933 - 0984) |
| Gwen verch Gronwy (~0964 - ) |
Ellenor or Nest of Powys (0934 - ) |
| Elystan Glodryd ap Cuhelyn of Builth Lord of Builth | Gwenllian verch Einion Llewellyn |
| b. 0933, Radnorshire, Wales d. abt 1010 bur. Trelystan, Gorddwr, Montgomeryshire, Wales occ. cen. im. . ud. |
b. abt 0956, Dynevor, Llandyfeisant, Carmarthenshire, Wales d. bur. occ. cen. im. . ud. |
| Cadwgan ap Elystan Glodrydd of Builth Lord of Builth |